Clinically speaking, cock and ball torture - CBT, penis torture, dick torture, call it what you like - refers to any sexual activity involving constriction, restraint or the application of pain to the penis and testicles, with the goal of heightened pleasure. It's a broad umbrella that covers everything from gentle sensation play to more intense impact and bondage work, all focused on the same very obliging area of the body.

Not keen on the word torture? Fair enough. In BDSM it means something quite different to the dictionary definition, but cock and ball play works just as well - and describes exactly what it is.

Everyone comes to CBT differently. For some it's purely physical - the pain, the pressure, the intensity of sensation in one of the body's most sensitive areas. For others the appeal is psychological; humiliation, power exchange, the particular charge that comes from being completely at someone else's mercy. 

On the giving side, there's the sadist's satisfaction - the pleasure of being in total control and watching the effect of every decision you make. 

Usually it's some combination of all of the above, and that's exactly what makes it so compelling.

Technically, a fetish involves an inanimate object - though body parts qualify too, and the lines get blurry fast. CBT sits more comfortably under the kink umbrella: a sexual activity that falls outside what traditional society considers standard fare. 

Not that standard fare was ever all that interesting. However you want to label it, CBT is hugely popular and widely practised. And if you keep reading, potentially by you.

Like any intense form of BDSM, CBT carries risk. It falls under RACK - risk-aware consensual kink - which means everyone involved understands what they're signing up for and consents accordingly. Follow the safety guidelines, respect safewords, and there's no reason the line between pain and pleasure can't be walked very enjoyably indeed.

Increased blood flow to the genitals causes engorgement, which in turn means CBT is processed as pleasure rather than straight pain. Adrenaline kicks in, the genitals become further enlarged, and the intensity builds. The body gets confused - this area is usually associated with pleasure, not punishment - and out of that confusion a new pain/pleasure association is born. Powerful stuff.

CBT requires a level of trust that's hard to replicate elsewhere. Boundaries are pushed but never crossed, and that dynamic - of total vulnerability on one side and total responsibility on the other - forges a genuinely deep connection. The psychological and physical responses it triggers in both partners are something else entirely.

Increased blood flow means every touch, lick, stroke or graze lands harder than it normally would. The cock and balls are already the body's most sensitive real estate - CBT turns that sensitivity up considerably. The lightest contact can bring someone to the edge.

Many CBT toys are designed to restrict the testicles from rising at the point of climax. 

The resistance makes the orgasm significantly more intense, and the further the testicles are pulled down, the further the ejaculate travels - prolonging and amplifying the whole experience. 

After everything that came before it, that release hits very hard indeed.

• Trim pubic hair for a clear view and to avoid snagging
• Alleviate pressure every 20-30 minutes to restore circulation fully
• Avoid genital bindings that cannot be easily untied/removed
• Keep ‘quick release’ tools, such as EMT scissors and cock ring cutters, handy
• Be gentle with piercings Stop immediately if you notice a loss of sensation, swelling, numbness or loss of colour
• Discuss boundaries and a safe word beforehand
• Go slowly, gradually increasing intensity and monitoring reactions
• Stop immediately if the pain starts to spread to other areas
• Avoid any practices that seriously wrench or twist the genitals

• Leave clamps on for long periods of time
• Leave CBT devices/weights on for prolonged periods or through the night
• Tie the balls to anything. A sudden knee-jerk reaction could result in serious damage
• Bind the penis/scrotum too tightly – you don’t want to cut off circulation
• Insert anything into the urethra without adequate lubrication
• Squeeze the penis too hard, it could damage the erectile tissue
• Use sharp, hard hits
• Let go of weights suddenly, lower them down gradually and gently

Ever heard the saying, "they’re a real ball buster"? Well, this gives an all new, literal, meaning to the phrase. Ball busting, or ‘bb’ for short, refers to the act of kicking, kneeing or punching the slave in his testicles. Unfortunately (or in this case, fortunately) in this sort of ‘bb’ activity the balls are not made of steel, so it could hurt a little. This particular form of CBT originates in Japan, where it is referred to as Tamakeri. Luckily for you, UberKinky now has specially designed tools to imitate the effects of ball busting exactly.

Want to sharpen up on those knife skills? Well we guarantee that you’ll be hungry for more when you add this ingredient to your CBT mix. Knife play remains a popular choice for those that like to live life on the edge, and when it is combined with some good, old fashioned genitorture, the physical and psychological reactions can be extremely intense. It can also be used as a form of temperature play (by cooling or heating the objects) or body modification. But be careful; with any play that may draw blood, there is a chance of transmitting diseases.

A ball stretcher does exactly what it says. It applies gradual pressure to the scrotum, pulling it downwards and away from the body while keeping the testicles exactly where you want them - no disappearing act at the point of climax. For an extra layer of sensation, the Dominant can tug gently on the weights. Simple, effective, and a solid entry point into genitorture.

Sensation and temperature play pair beautifully with CBT - especially when combined with genital bondage or testicle cuffs, which leave everything exposed and hypersensitive to whatever comes next. On the heat side: wax play delivers an intense hit of sensation to already sensitive skin, and a Wartenberg pinwheel dragged slowly across exposed areas produces something between pleasure and torment that's difficult to describe and harder to forget. Tickle torture is another option - deceptively cruel in the right hands. For the other extreme, ice or cool metal objects applied to the genitals produce an entirely different kind of reaction. Same principle, opposite sensation - and just as effective.

Cock and ball bondage brings together aesthetics and sensation in equal measure. Binding the balls increases sensitivity, restricts orgasm and opens up the whole area for tease and denial play - everything exposed, nowhere to go. Done well, it looks as good as it feels. Mummification of the penis is a popular next step, turning an erection into an uncomfortable prospect and giving the Dominant something very satisfying to work with. Once everything is bound and tight, sensation and temperature play become considerably more interesting. One firm rule: don't bind too tight. The goal is intensity, not damage. That package has a long and promising future ahead of it.

Needle play sits at the more extreme end of CBT and is strictly for the experienced and well-researched. Sterile needles are inserted into the skin of the penis and scrotum, producing an intense and localised sensation that those who practise it describe as unlike anything else. It requires a solid understanding of anatomy, rigorous hygiene and, ideally, proper training before attempting. Not a starting point - but worth knowing exists for those working their way up.

Electrostimulation passes an electric current through the body, delivering sensations that range from a gentle tingle to something considerably more arresting - entirely depending on the device and the setting. A firm favourite in the CBT world, and particularly effective for orgasm tease and denial given the control it hands to the Dominant. The range of toys available is extensive. Some work externally, others are designed for internal use, producing sensation from the inside out. Either way, the results tend to be memorable.

Urethral play involves inserting a specialised implement into the urethra - and it's important to stress that only purpose-made tools like urethral sounds should ever be used here. It can be uncomfortable at first, particularly for beginners, so go slowly, use plenty of lubricant and sterilise everything thoroughly before use. Infection is a real risk if hygiene is skipped. Practised safely and patiently, it's an intense and deeply specific sensation that has a dedicated following for good reason.

Genital spanking takes a familiar activity and points it somewhere new. A flogger, cane, whip or bare hand applied to the penis and testicles produces an entirely different experience to standard impact play - the sensitivity of the area sees to that. Start light, build gradually, and resist the urge to go too hard too soon. The goal is intensity, not injury.

A word of caution here: while IcyHot and chilli oil are sometimes mentioned in CBT circles, applying either to genital skin is genuinely risky. The mucous membranes in this area are significantly more sensitive than regular skin, and what produces a manageable tingle elsewhere can cause serious irritation, chemical burns or lasting discomfort down there. If the appeal is temperature and sensation, purpose-made intimate stimulation products are a much safer route to the same effect - designed specifically for sensitive skin and considerably more predictable in how they behave. Save the chilli oil for cooking.