Everything about sex machines, on one page
Types, specs, connectors, cleaning, noise, remote control, double penetration, and the peer-reviewed science of squirting. The most complete fucking machine guide you'll find.
What Is a Sex Machine?
A sex machine, often called a fucking machine or fuck machine, is a motorized device that produces a repetitive thrusting, rotating or vibrating motion through an interchangeable attachment, usually a dildo. The machine takes over the physical work entirely: you set the speed, angle, depth and rhythm, and the motor delivers it with a consistency and stamina no human hand or partner can match.
That consistency is precisely the appeal. Sexual response research consistently shows that predictable, sustained, correctly-angled stimulation is one of the strongest facilitators of orgasm, whereas irregular rhythm and fatigue are among the most common disruptors (Levin, 2019). A machine removes both problems at once.
The term "fucking machine" typically refers to the thrusting type specifically; "sex machine" is the umbrella term that also covers saddle-style and handheld devices.
The Main Types of Fucking Machines
Classic thrusting machine
The archetype: a motor on a frame drives a rod back and forth. Angle and, on better models, stroke length are adjustable. The most versatile category, suitable for vaginal and anal use in almost any position. Best for: anyone wanting a fully hands-free experience with maximum control over tempo and depth.
Saddle-style / ride-on machine
A saddle you sit on, with a vibrating or rotating attachment. Stimulation comes primarily from vibration and pressure; you control the movement by grinding. Best for: intense combined clitoral and internal vibration with self-led motion.
Handheld thruster
A compact cordless thrusting vibrator. Cheaper and more discreet, but less power, shorter stroke, not hands-free. Best for: beginners testing whether thrusting stimulation works for them before investing.
Complete multi-point stimulation systems
The newest generation combines several stimulation points in one integrated system: dual penetration via a Y-connector plus a clitoral vibration element, supported by a waterproof positioning cushion that fixes the body at the optimal angle. The Squirtmachine is the best-known example of this category: a system engineered specifically around the combination of angle, pressure and simultaneous three-point stimulation. We analyse its engineering against the research further down this page. Best for: experienced users seeking layered, maximum-intensity stimulation, and anyone specifically pursuing squirting.
What to Look For When Buying
Motor power and torque
- Wattage: from roughly 60W upward a machine maintains a steady rhythm under body resistance. Budget machines under 30W visibly slow down the moment pressure hits the arm, exactly when you don't want them to.
- Torque (N·m): more important than raw speed. Torque keeps the stroke smooth under load: 4 N·m or more pushes through resistance without stuttering; weak motors stall or judder.
- Speed range: a ceiling of 250–300 strokes per minute (spm) is more than enough. What matters far more is fine control at the low end, where most sessions live: between 60 and 180 spm.
Stroke length and adjustability
Stroke length should be adjustable, e.g. from ~3 cm (shallow, teasing) to 8+ cm (deep, intense). Equally important: tool-free angle adjustment. The difference between "pleasant" and "exactly right" is usually a few degrees of angle, especially when targeting the anterior vaginal wall or the prostate. A machine that needs an Allen key mid-session is a design failure.
Stability
- Weight: heavier is better. 6+ kg is a good sign; sub-3 kg machines need bracing against furniture.
- Suction cups or non-slip feet for smooth floors.
- A wide, low frame. A high centre of gravity plus thrusting force equals tipping.
Attachment material and size
Platinum silicone is the gold standard (non-porous, hypoallergenic, boilable). Soft PVC and TPE are softer and cheaper but porous: condom barrier when sharing, periodic replacement. Details in the cleaning section. Size-wise, start modest: 4–4.5 cm diameter is comfortable for most bodies. XXL sizes (6 cm and up, 700+ grams) are for experienced users, and even then: warm up first.
Control options
- Physical buttons on the machine: the fail-safe.
- Wireless remote: 10–15 m range is standard; ideal for same-room partner play.
- App control via Bluetooth: the most flexible option, with fine speed control, play modes, and increasingly remote control across the internet. Full explanation in the remote control section.
Water resistance
The machine body is almost never waterproof (motor + electronics). But accessories should be: an IPX7-rated vibe pad and positioning cushion can be rinsed clean and survive lubricant, sweat and squirting. If squirting is the goal, a waterproof surface isn't a luxury: mess anxiety is a documented psychological blocker of the final "release" step (Salama et al., 2015). More in the science section.
Price Tiers: What Do You Get?
| Price tier | What to expect |
|---|---|
| < €150 | Handheld thrusters and entry-level machines. Limited power, plastic builds, short lifespan. Fine for testing the waters. |
| €150 – €400 | Solid mid-range thrusters. Decent motors, basic adjustability, usually Vac-U-Lock. |
| €400 – €800 | Serious machines: high-torque motors, full tool-free adjustability, app control, complete multi-point systems with accessories included. |
| > €800 | Premium segment: maximum power, all-metal construction, extended ecosystems. |
Rule of thumb: never economize on motor and frame. Attachments can be expanded later; a weak motor cannot be upgraded.
Vac-U-Lock & Connector Systems
Buy a sex machine and you're really buying into a connector ecosystem. It determines which attachments you can use for the machine's whole life. The most common buyer's regret in this category is getting this wrong.
Vac-U-Lock
The industry standard, originally by Doc Johnson: attachments have a ribbed cavity that presses onto a matching ribbed plug; friction and suction hold it. Strengths: enormous cross-brand attachment choice; attachments also work by hand or in harnesses. Weaknesses: the friction fit can work loose under heavy load or high speed; the cavity is a hygiene trap needing a bottle brush; knockoff plugs vary in fit.
Threaded rod connectors
Many machines end in a threaded rod; attachments screw on. Extremely secure but slow to swap, and thread standards vary, so verify the thread size before buying attachments.
Quick Lock and other self-locking systems
Proprietary click-in connectors such as the Quick Lock system on the Squirt machine: the attachment clicks into a locking receiver and cannot pull free until released. Strengths: fastest swapping, mechanically secured (which matters enormously for anal use, see the DP section), and nothing works loose. Weakness: you're limited to that brand's attachment range; check it covers your needs first.
Suction cup adapters
Grip standard suction-cup dildos you may already own. Convenient but the least secure option: moderate speeds only, never anal.
| Your machine has… | You can use… |
|---|---|
| Vac-U-Lock plug | Any Vac-U-Lock attachment, any brand |
| Threaded rod | Attachments matching that exact thread; Vac-U-Lock adapters exist |
| Quick Lock / self-locking connector | That brand's attachments (maximum security) |
| Suction cup adapter | Standard suction dildos (light duty only) |
Squirting: What Does the Science Say?
Few topics in sexuality generate as much mythology and marketing nonsense as squirting. The actual peer-reviewed research paints a more interesting and more useful picture.
Two phenomena, often confused
Researchers distinguish (Pastor, 2013):
- Female ejaculation in the strict sense: a small quantity (~1 ml) of thick, milky fluid from the paraurethral (Skene's) glands, the "female prostate" (Wimpissinger et al., 2007), containing prostate-specific antigen (PSA).
- Squirting: the expulsion of a larger volume of clear, diluted fluid during intense arousal or orgasm.
Where the fluid comes from
The ultrasound study
Seven women were scanned before, during and after squirting: bladders that were empty before stimulation visibly filled during arousal and were empty again immediately after, with Skene's gland PSA mixed into the expelled fluid in most cases.
Salama et al. (2015), The Journal of Sexual Medicine
The blue-dye confirmation
Dye introduced into participants' bladders came out in the squirted fluid: direct proof of bladder origin, again frequently mixed with female-prostate secretions.
Inoue et al. (2022), International Journal of Urology
Practical takeaway: the fluid is produced rapidly during high arousal, is far more dilute than normal urine, is frequently mixed with true female ejaculate, and is not ordinary urination. Understanding this removes the shame ("am I just peeing?") that research identifies as a major inhibitor.
How common is it?
Estimates vary by methodology, but a large international survey (Wimpissinger et al., 2013) and later reviews (Pastor & Chmel, 2018) suggest a majority of women experience some fluid release during sex at least occasionally, while regular high-volume squirting is less common. Most women who experience it describe it positively.
What actually triggers squirting?
Five factors recur across the literature:
- Anterior vaginal wall stimulation. Firm, rhythmic pressure on the front vaginal wall, the G-spot region: anatomically the clitourethrovaginal (CUV) complex where internal clitoris, urethra and vaginal wall interact (Jannini et al., 2014). This region responds to pressure and rhythm, not light touch.
- Sustained, consistent rhythm. Reports overwhelmingly involve prolonged steady stimulation. Fatigue is the limiting factor manually, and the one place machines hold an objective advantage: a motor does not tire, slow down or lose the angle.
- Simultaneous clitoral stimulation. The external clitoris and CUV complex are one organ system (O'Connell et al., 2005), and roughly three-quarters of women need or strongly prefer direct clitoral stimulation for orgasm (Herbenick et al., 2018). Squirting reports consistently describe internal + clitoral stimulation at the same time.
- Time and psychological release. The bladder-filling documented by Salama et al. takes extended arousal: tens of minutes. The sensation just before squirting resembles urinary urgency, and consciously releasing rather than clenching is the final step. Fear of mess is the most cited blocker, which is why waterproof surfaces genuinely matter.
- Pelvic angle. Positions that tilt the pelvis and direct pressure into the anterior wall (hips elevated, prone, deep doggy) are consistently reported as most effective, for straightforward anatomical reasons.
Can everyone learn it?
Honestly: unknown, and probably not everyone. Skene's gland anatomy varies considerably between individuals (Wimpissinger et al., 2007), and no study demonstrates a universal technique. What the research supports: the right combination of anterior-wall pressure, sustained rhythm, clitoral co-stimulation, time, position and psychological safety maximizes the probability. Any product guaranteeing results for everyone is contradicting the literature.
Is it safe?
Squirting is physiologically harmless and is not incontinence: Pastor (2013) distinguishes it clearly from coital incontinence, which is involuntary leakage unrelated to arousal mechanics. Fluid loss without arousal (coughing, exercise) is a different matter for a doctor or pelvic physiotherapist.
Research → practice
| Finding | Implication |
|---|---|
| Fluid builds in the bladder during extended arousal (Salama 2015; Inoue 2022) | Plan long sessions; hydrate; empty your bladder before starting so the urgency signal is unambiguous |
| Anterior wall / CUV complex is the trigger zone (Jannini 2014) | Angle matters more than depth: tilt the pelvis, aim the pressure forward |
| Steady rhythm beats irregular stimulation | Mechanical consistency, for many minutes |
| Clitoral co-stimulation strongly facilitates orgasm (Herbenick 2018) | Combine internal pressure with external clitoral stimulation simultaneously |
| Psychological release is the final step (Salama 2015) | Waterproof surface, zero mess anxiety, explicit permission to let go |
Why the Squirt machine Is Engineered Differently
Most fucking machines are, mechanically, one thing: a motor that thrusts. The Squirtmachine is built as a complete system around a single design goal: mechanically recreating the facilitating conditions the research above describes. Here we map each design decision onto that physiology, so you can judge the engineering on its merits.
The research says
The trigger zone is the CUV complex on the anterior wall (Jannini 2014); reaching it is a question of angle, not depth. Mess anxiety blocks the final release step (Salama 2015).The engineering answers
The positioning cushion. Prone, hips elevated at a fixed tested angle; extended-height rods and tool-free clamps aim the thrust vector into the anterior wall. Cushion and pad are IPX7 waterproof, which looks like comfort but is arousal psychology: with nothing to protect, there is nothing to hold back for.The research says
External clitoris and CUV complex are one organ (O'Connell 2005); ~75% of women need or strongly prefer direct clitoral stimulation (Herbenick 2018).The engineering answers
The integrated vibe pad. Medical-grade silicone, 9 modes, own remote to 10 m, magnetic USB charging, stimulating the clitoris from below while the machine works internally, hands-free, so the position never breaks.The research says
Multi-point stimulation intensifies arousal; anal stimulation recruits the same pelvic nerve pathways involved in orgasm.The engineering answers
Dual penetration via Y-connector. A vaginal attachment and anal beads driven simultaneously, in perfect sync, from one motor, completing the triple-point configuration: anterior-wall pressure + anal + clitoral, continuously.The research says
Squirting needs sustained, steady stimulation over an extended period; the enemy is any interruption: fatigue, slowing, rhythm loss.The engineering answers
The motor. 4.2 N·m torque at 68W rated (72W max) holds a chosen rhythm without slowing under full body resistance; 10 speed levels to 292 spm, stroke adjustable 3–8.5 cm, plus 20 app-based play modes for those who respond to pattern over constancy.The research says
Release requires safety, and safety requires control.The engineering answers
Control architecture. Physical buttons, wireless remote to 15 m, and a browser web app (no install, no account). In shared remote sessions the user's own input always overrides: surrender remains a continuous choice.The honest limitations
- Squirting is not guaranteed. The manufacturer states this itself, and it matches the research.
- The attachments are soft PVC, not silicone: body-friendly and soft, but porous: condom barriers when sharing, periodic replacement (see cleaning).
- The machine body is not waterproof. Only pad and cushion are.
- The Quick Lock connector is fast and maximally secure, but means checking attachment availability within the ecosystem rather than the universal Vac-U-Lock range.
Verdict: judged purely as engineering, this is the most complete translation of the squirting research into hardware currently on the market: angle, clitoral co-stimulation, multi-point layering, sustained consistency and psychological safety each addressed by a specific, identifiable design decision. For buyers whose explicit goal is squirting rather than general machine play, that systems approach is the differentiator. Editions and current pricing at squirtmachine.com.
Remote Control: How App-Based Play Works
The biggest evolution in sex machines isn't mechanical. It's connectivity.
Web app vs. native app
Native apps require installation, usually an account, and stay visible on your phone; app stores also periodically purge adult apps. Browser-based web apps, the approach of newer systems, run directly in the phone browser via the Web Bluetooth API (Chrome recommended): no installation, no account, no stored usage profile. This is the direction the industry is moving, and the privacy-friendly choice.
How long-distance control actually works
- You connect to your machine locally over Bluetooth: your phone is the bridge; the machine itself never touches the internet.
- You generate a sharing link, code or QR and send it to your partner.
- Your partner opens it in their browser (no app or account on their side) and their commands travel over the internet to your phone, then over Bluetooth to the machine.
- Your input always overrides: the machine follows the most recent command from either side, and you can end the session instantly.
Safety protocol for remote sessions
- Safeword agreed in advance, over a channel that stays open (video call/chat), not just the app.
- Keep a control device within physical reach the entire session. Handing over control never means losing access to it.
- Agree intensity ceilings before the session.
- Only share links with people you trust, and verify links expire when the session ends.
- The operating partner treats silence as "stop", never as "continue".
Connection tips
Keep the phone in the same room as the machine (Bluetooth ≈ 10 m). For long-distance play the weak link is usually your Wi-Fi: if commands lag during a parallel video call, drop the video quality first. And plug your phone in: Bluetooth + video drains batteries fast.
Noise Levels: How Quiet Is "Quiet"?
Noise is the most under-discussed spec in the category, and for anyone with housemates or neighbors, the one that decides whether the machine gets used at all.
| dB level | Comparable to | Through a closed door? |
|---|---|---|
| 40–45 dB | Quiet library, modern fridge | Inaudible |
| 50–55 dB | Normal conversation, dishwasher | Faint hum at most |
| 60–65 dB | Washing machine | Clearly audible |
| 70+ dB | Vacuum cleaner | Audible in the next room |
Quality machines at low-medium speed sit around 45–55 dB; budget machines at full speed can exceed 70 dB. Note that dB is logarithmic: 60 dB is perceived as roughly twice as loud as 50 dB.
Where noise comes from: the motor (constant hum, rising with speed; brushless is quieter), the crank mechanism (wear and loose bolts add rattle), and, usually the real problem, structure-borne vibration into the floor: a low-frequency thrum that travels through buildings far better than airborne sound.
Why you can't trust "whisper quiet": manufacturers measure at minimum speed, no load, open room. Real use is medium+ speed under body resistance. Measure yourself with a free sound-meter app at 1 m, at your realistic speed, with hand pressure on the rod, within the return window.
9 ways to make any machine quieter
- A thick rubber or foam mat under the machine: kills structure-borne transfer; the single biggest improvement.
- No contact with walls or furniture: every contact point becomes a soundboard.
- Retighten all bolts monthly: rattling machines are usually just loose machines.
- Lower the speed: dropping 250→180 spm often halves perceived noise; strong torque keeps the rhythm steady regardless.
- Shorter stroke at the same speed moves less mass.
- Maintain the mechanism (see below): worn bearings are loud bearings.
- Carpets, curtains, a bed between machine and shared wall.
- A fan or white noise near the door: masking the rhythm matters more than raw dB, because rhythmic sound is what's recognizable.
- Timing: daytime ambient noise is 10–15 dB above nighttime; the same machine is far less noticeable at 15:00 than at 01:00.
Buying for quietness: higher torque (4+ N·m) means lower strain, and lower strain is quieter under load than a small motor at its limit; heavier machines vibrate less into the floor; metal frames resonate less than plastic.
Double Penetration: Starting Safely
Simultaneous vaginal and anal stimulation is one of the most intense experiences a machine can deliver, and one of the technically easiest ways to explore DP at all: a Y-connector drives both attachments from one motor, perfectly in sync, at exactly the pace you choose, stoppable instantly. It's also the application where preparation matters most.
Non-negotiable rules
- Anal attachments must be mechanically secured: locked via a Quick Lock or other self-locking connector, firmly seated Vac-U-Lock, or a genuinely flared base. Friction-fit and suction mounts are not acceptable for anal use. This is the most important rule on this page.
- Lubricant: more than you think, then more. The anus produces none. Apply generously, reapply on a mental timer, because arousal reliably makes people forget. Water-based works with everything.
- Size down from your vaginal comfort level. Graduated anal beads (building from ~3 cm) are the ideal geometry for machines: each bead is a natural pause point, and shallow strokes over the first beads are a complete experience in themselves.
- Angle for two channels. Vaginal and anal canals run at slightly different angles; prone with hips elevated on a positioning cushion aligns both with a single thrust plane, exactly why complete DP systems ship with a cushion. Lateral pressure on either side means adjust, not endure.
A sensible first-session protocol
- Be independently comfortable with machine vaginal play and manual anal play before combining them. DP should combine two familiar sensations, not introduce a new one.
- Empty bladder, towels down, every source of mess anxiety removed.
- Warm up 10–15 minutes without the machine; arousal physically relaxes the pelvic floor.
- Machine at minimum: shortest stroke, lowest speed. Insert attachments manually with the machine off, then start it. Never let the machine do first insertion.
- Increase one variable at a time: speed or stroke, small steps, a minute between.
- Keep first DP sessions to 15–20 minutes; tissue tires before you feel it.
Reading your body
Adjust (pause, re-lube, change angle, size down): dull pressure, fullness, mild burning that fades in seconds. Stop for today: sharp pain, any bleeding, cramping, numbness. None of these are "push-through" sensations. Persistent symptoms afterward warrant a doctor; anal fissures are common, treatable and nothing to be embarrassed about.
DP hygiene
Never move an attachment from anal to vaginal use: not mid-session, not without full disinfection between sessions. Y-connector setups solve this structurally (each attachment has a fixed role); keep it that way. A condom over porous anal attachments makes cleanup trivial and extends their life.
Adding the third point
Once DP is comfortable, adding simultaneous clitoral stimulation (a wand, or an integrated vibe pad on systems built for it) completes the triple-point configuration discussed in the science section. Introduce it in a later session: one new variable at a time is the rule that makes everything here work.
Cleaning and Maintenance
Know your materials
Non-porous (fully sanitizable): platinum silicone, glass, stainless steel, ABS. Porous (surface-cleanable only): soft PVC, TPE/TPR, jelly. Porous isn't defective, just different rules: condom barrier when sharing, replacement every 6–12 months or at any tackiness, odor or discoloration. Most machine attachments, including the soft-PVC attachments shipped with complete systems, are porous.
The 5-minute post-session routine
- Detach attachments immediately, so fluids don't dry in the connector.
- Rinse under warm (not hot) water.
- Wash with toy cleaner or mild unscented soap; use a soft bottle brush for Vac-U-Lock cavities: the number-one hygiene trap.
- Rinse thoroughly: soap residue irritates.
- Air dry completely before storage; trapped moisture means mold, especially in cavities.
Disinfection (non-porous only)
Boil 8–10 min (silicone without electronics), or a 10% bleach solution for 10 min followed by very thorough rinsing, or top-rack dishwasher without detergent. Porous materials tolerate none of these, hence the sharing and replacement rules.
The machine itself
Never submerge or rinse the motor unit. Wipe frame and rod with a damp cloth and dry immediately. Clean fluid residue from the locking mechanism with a barely-damp swab (residue is why connectors seize). Monthly: check frame bolts, inspect the power cable, listen for new motor noises: grinding or clicking that wasn't there before means stop and contact support. IPX7 pads can be washed under running water, but charge contacts must be fully dry before magnetic charging.
Lubricant compatibility
Water-based: safe with everything: the default. Silicone-based: longer-lasting, fine with PVC/glass/steel, but patch-test on silicone toys. Wash all lube residue off after every session; dried lubricant degrades surfaces.
Storage
Attachments separately (soft materials in contact react chemically; individual cloth bags are ideal), cool, dark and dry; machine with rod retracted, ideally covered.
General Safety Rules
- Start low and slow: lowest speed, shortest stroke, then build.
- Keep the controls within reach at all times, especially when a partner operates remotely; agree a safeword beforehand.
- Pain is a stop sign, not a challenge. Intense is fine; sharp, burning or cramping is not.
- Electrical safety: keep the machine body dry, use only the supplied adapter, inspect the cable regularly.
- Empty your bladder before long sessions: it makes every internal signal unambiguous.
Frequently Asked Questions
- Is a sex machine suitable for beginners?
- Yes, provided it offers finely adjustable low speeds and a short minimum stroke. Start gently and build over multiple sessions.
- Can everyone squirt with a sex machine?
- No. Machines engineered around the right angle, pressure and combined stimulation significantly improve the odds (the physiology is documented above), but squirting remains individual and can never be guaranteed. Distrust any seller promising 100%.
- How loud is a fucking machine?
- Roughly 45–70 dB depending on build quality and speed; quality machines are barely audible at low speed. See the noise section for reducing it further.
- Are attachments interchangeable between brands?
- With Vac-U-Lock, almost always. With proprietary connectors such as Quick Lock, only within that brand's ecosystem. Check the range before buying.
- Is shipping discreet?
- Virtually every serious EU retailer ships in neutral packaging with a non-identifying sender. Verify in the shipping terms.
- Sex machine vs. fucking machine: what's the difference?
- In practice, nothing: "fucking machine" is simply the common term for the thrusting type.
- How much should I spend on a first machine?
- If you know thrusting stimulation works for you, the €400–800 tier is the best long-term value: machines you won't outgrow. If unsure, test the concept with a sub-€150 handheld first.
- Is the squirting fluid just urine?
- No. See the science section: it originates largely from the bladder but is heavily diluted and typically mixed with genuine Skene's gland ejaculate. It is physiologically harmless and not a form of incontinence.
Conclusion: The Best Sex Machine for You
There is no single "best" fucking machine in absolute terms, only the best one for your goals:
- First exploration? A handheld thruster or entry-level machine.
- Powerful, versatile hands-free play? A mid-range or better classic thrusting machine with Vac-U-Lock.
- Maximum combined stimulation, or squirting specifically? A complete multi-point system such as the Squirtmachine, which integrates dual penetration, clitoral vibration and body positioning into one engineered whole, mapped point for point onto what the research says facilitates squirting.
Whatever you choose: prioritize motor torque, adjustability, material quality and safety, clean and maintain it well, and you'll own a machine that delivers for years.
Scientific References
- Herbenick, D., Fu, T.C., Arter, J., Sanders, S.A., & Dodge, B. (2018). Women's experiences with genital touching, sexual pleasure, and orgasm: Results from a U.S. probability sample of women ages 18 to 94. Journal of Sex & Marital Therapy, 44(2), 201–212.
- Inoue, M., Sekiguchi, Y., et al. (2022). Enhanced visualization of female "squirting". International Journal of Urology, 29(11), 1368–1370.
- Jannini, E.A., Buisson, O., & Rubio-Casillas, A. (2014). Beyond the G-spot: clitourethrovaginal complex anatomy in female orgasm. Nature Reviews Urology, 11(9), 531–538.
- Levin, R.J. (2019). The clitoris: an appraisal of its reproductive function during the fertile years. Clinical Anatomy, 33(1).
- O'Connell, H.E., Sanjeevan, K.V., & Hutson, J.M. (2005). Anatomy of the clitoris. The Journal of Urology, 174(4), 1189–1195.
- Pastor, Z. (2013). Female ejaculation orgasm vs. coital incontinence: A systematic review. The Journal of Sexual Medicine, 10(7), 1682–1691.
- Pastor, Z., & Chmel, R. (2018). Differential diagnostics of female "sexual" fluids: a narrative review. International Urogynecology Journal, 29(5), 621–629.
- Salama, S., Boitrelle, F., Gauquelin, A., Malagrida, L., Thiounn, N., & Desvaux, P. (2015). Nature and origin of "squirting" in female sexuality. The Journal of Sexual Medicine, 12(3), 661–666.
- Wimpissinger, F., Stifter, K., Grin, W., & Stackl, W. (2007). The female prostate revisited: perineal ultrasound and biochemical studies of female ejaculate. The Journal of Sexual Medicine, 4(5), 1388–1393.
- Wimpissinger, F., Springer, C., & Stackl, W. (2013). International online survey: female ejaculation has a positive impact on women's and their partners' sexual lives. BJU International, 112(2), E177–E185.