20 common sexual kinks, according to sex educators, and why it's totally normal to have a kink

• There's nothing unusual about having a kink — some evidence suggests half the population has one.
• A few examples of kinks include bondage, impact play aka spanking, discipline, and role play.

As any pleasure-seeker or social scroller knows, a kink isn't just a knot in your neck. It also refers to your sexual preferences.

"A kink is a sexual interest that is outside of the ordinary," says certified sex educator Javay Frye-Nekrasova, founder of The Millennial Sexpert and educator with Lovehoney.

Of course, what qualifies as ordinary sex — or vanilla sex — varies by person, as well as cultural context, and so does what qualifies as kinky.

"It's entirely subjective," Frye-Nekrasova says. Some individuals might say they have a doggy style kink because they like to hit it from the back, for instance. Meanwhile, others might say they're kinky because whips and chains excite them. Still, about half the population reports having interest in at least one non-vanilla sex act.

Note, however, that a kink is different from a fetish. While a kink expresses an interest in a sexual act, "a fetish is a fixation on an object or body part for sexual gratification," Frye-Nekrasova says.

To put it simply, a kink is something you do to get turned on, while a fetish is a thing you need to get turned on.

Semantics of kink versus fetish aside, there's no shortage of things people might be into in the bedroom (or, uh, dungeon). Below, kink educators explain 20 of the most common kinks, outlining why someone might think it's hot and sharing tips for your own sexperiments.

1. Age gap

An age-gap kink is a kink for role play where adult-aged folks act out, and are turned on by, fantasies that involve a difference in ages, says sex educator Searah Deysach, owner of Early to Bed, an education-focused sex shop in Chicago.

For instance, one partner might play "baby" and put on a diaper, while the other plays "Mommy" or "Daddy" — this dynamic in particular is known as "daddy dominant–baby girl." One partner might also pretend to be a college-aged student, while another pretends to be a professor.

"It's important to note that an age gap kink involves consenting adults (not children) pretending to be younger than they really are," Deysach says. Any illicit contact or conversations with minors is a felony.

2. Bondage

Bondage is the B in "BDSM." In full, "the acronym stands for bondage, discipline/dominance, submission/sadism, and masochism," Deysach says.

At its most distilled, "an individual interested in bondage when they are interested in being restrained or restricted, or restraining or restricting their partner," says Lisa Finn, a sex educator with sex-toy emporium Babeland.

Bondage can involve anything from ropes and ribbons to zip-ties and saran wrap, and it may appeal to folks for a variety of reasons.

"Some people like the aesthetic of a restrained body, others like the sensation of the bondage material on their skin, and others like the way it reinstates power dynamics," Finn says.

3. Cock and ball torture

Cock and ball torture, sometimes known simply as CBT (not to be confused with cognitive behavioral therapy), is a fetish marked by the desire to have pain inflicted on your own penis or testicles — or the desire to inflict said pain.

"This pain can be achieved through pulling, stretching, or even stepping on one's bits," Deysach says.

CBT may also involve the use of cock cages, urethral sounding, genital flogging, and more, and she says.

4. Cuckolding

Someone has a cuckolding kink when they enjoy watching their partner have sex with other people — either in the same room, or via Facetime or video, Deysach says.

Historically, the term was used specifically to refer to married men who wanted to watch their wives have sex with other men, but according to Deysach, the term can be applied to folks of any gender, sexuality, or marital status.

"The thrill of watching your lover have sex with another person is something that folks across the gender spectrum can find exciting and kinky," Deysach says.

Typically, when someone uses the term cuckold, it implies that humiliation is involved, she says. For some people, the act of watching a partner have sex with someone else — for instance, someone with a larger penis or more sexual skills — is humiliating, and it's this emotional sensation that turns them on.

"But for others it can be a more open term just to refer to the thrill of watching your lover partner with another while you sit on the sidelines," she says.

Note: Unlike a threesome, a cuckolding scene would have one person sitting on the sidelines.

5. Discipline

According to Finn, discipline is a form of roleplay where certain acts are framed as "corrective" or as "punishment."

This kink often involves a more dominant partner setting rules or expectations for a more submissive partner— and if the more submissive partner breaks those rules, there are consequences, Finn says.

These consequences can include physical acts like spanking or other impact play or mental and emotional acts like humiliation or testing their partner, according to Finn.

To be super-duper clear: "Disciplinary play is a form of roleplay — it shouldn't actually be used as a way to resolve conflict with real-world repercussions," Finn says.

6. Dominance

The D in BDSM can also stand for "dominance."

Dominance is the act of consensually taking control or holding the power in a scene or sexual dynamic with their partner, Finn says.

While a dominant partner plays the role of "Large and In Charge," the submissive partner should still always have autonomy over the situation, Finn says. For instance, they may negotiate the scene before play and use safewords and gestures throughout.

7. Erotic asphyxiation

Erotic asphyxiation, AKA breath play, is the act of controlling how much access you have to oxygen for the sake of power, play, and pleasure.

"When someone is choking you, they could seriously hurt you, even kill you," says sex educator Zachary Zane, author of "Boyslut: A Memoir and Manifesto" and sex expert for Momentum Intimacy. This involves an element of absolute submission to that partner, he says.

Many people also enjoy the physical sensations often associated with being deprived of air, such as tingling, a spreading warmth, and quickened heart rate.

"There's a high many people experience from it when they do finally get a gulp of air," he says.

Note: Erotic asphyxiation can be explored during solo sex, too. Here, the act is known as autoerotic asphyxiation.

8. Foot fetish

A foot fetish is marked by a sexual interest in feet, which can be the entirety of the foot or focused specifically on the toes, arch of the foot, or ankle.

Some people are turned on by servicing feet, Frye-Nekrasova says, which can be accomplished with a foot massage or at-home pedicure, for instance. Other people are turned on by the idea of doing something "dirty" — feet, after all, are usually the part of the body that touches the ground and dirt beneath.

"There are so many ways to incorporate feet into your sex life," Frye-Nekrasova says. Some people like to give a footjob, which is essentially a handjob with your feet, she says. "Meanwhile, other people enjoy the sensation of having their toes sucked, or sucking," she says.

Quick tip: Use lube or massage oil while giving a footjob to increase the sensation of slide.

9. Hentai

"Hentai refers to a specific type of Japanese illustration that often depicts overtly sexual scenes and scenarios," Deysach says.

A popular porn genre, hentai erotica often features tentacled beings, monsters, and other-worldly creatures.

"There is often an element of force and control associated with hentai porn," Zane says. For instance, hentai-inspired fantasy could involve an octopus forcing all of its tentacles inside the receiver's hole(s).

10. Impact play

Impact play is the broad name for sex that involves the use of hands, paddles, whips, flogs, or crops on a partner's meatiest, or most nerve-dense, parts.

"Impact types of play can involve light playful actions or more serious and painful sensations," Deysach says. Depending on what the consenting parties have agreed to, the impact can be a form of punishment or just delivered as part of sensational play.

For some people, for instance, a light smack on the bum while riding their partner's dick or dildo is adequate. Meanwhile, someone else might want to be smacked with a paddle hard enough that it leaves marks.

Important: "If you do plan on hitting someone, be sure you get educated about doing it safely," Deysach says.

11. Knismolagnia

The word 'knismolagnia' may bring to mind mystery meat, but it's actually the name for a tickling fetish.

Folks with this fetish are turned on by the sensation of being tickled by anything from human fingers and feathers, to vibrators or electrical stimulation toys.

In some instances, the person being tickled is also tied down, but not always, Finn says.

"A tickling fetish is unique because someone is smiling and laughing while they're being tickled, even though it is uncomfortable and intense. There really isn't any other kink where your body responds to discomfort with a reflexive laugh," Zane says.

So generally, tickling is considered a more "playful" kink, though it can be very intense.

12. Lactation

Being very into a lover's body fluids is quite common — and for some people, breast milk is one of those fluids.

"Some people find the miraculousness of the human body's ability to create milk arousing. Other people are turned on by the rarity of the experience, since lactation generally only happens after a baby is born," Frye-Nekrasova says.

According to Frye-Nekrasova, a lactation kink may also be tied to an age gap or age play kink, where someone feels aroused at the thought of pretending to be a breast-fed baby once again.

Note: Lactation kink is separate from a human cow kink, which doesn't just eroticize milk production. This kink also eroticizes the idea of being dehumanized, forcefully impregnated, and used as a milk machine.

13. Masochism

The M in BDSM and the complement to sadism, "masochism is the act of erotic enjoyment in experiencing pain, humiliation, or intense sensation, " Finn says.

The mental or physical pain associated with masochism can be delivered by yourself or by a partner, they say.

Note: When with a partner, this pain is always delivered consensually. Non-consensual pain is abuse, not BDSM.

14. Pregnancy

Even though penis-in-vagina intercourse is (usually) required for an individual to become pregnant, there's still stigma around pregnant people being sexual, Deysach says.

According to Deysach, some people are aroused by that stigma and feel naughty when they're turned on by pregnant folks.

"Other people might have had a particularly electric sexual experience with someone who was pregnant and now mentally associate pregnancy and hot sex," she says.

Pregnancy kinks can also include the eroticization of lactation, darkened nipples, swollen ankles, or any other signs and symptoms of pregnancy, she says.

15. Role play

Role play is a common kink that involves pretending to be someone other than who you really are.

"There are lots of reasons why someone might want to try role playing — for some people, it's as simple as a desire to try something new and infuse a little excitement into their sex life," Deysach says.

According to Deysach, shedding your day-to-day persona and "becoming" someone else can be a way to let go and enjoy sex more.

"It can be a thrill and it can be a comfort," Deysach says.

16. Sensation play

Sensation play is the broad name for types of touch that involve stimulating your nerve endings in unique ways.

Sensation play can be done by experimenting with different temperatures — for instance, with candles, wax, or ice cubes, Finn says.

It can also be explored by teasing your nerves with tools like Wartenberg wheels, feather ticklers, or electrical stimulation wands, they say.

17. Tentacles

A tentacle kink refers to someone being turned on by the idea of being penetrated or otherwise sexually engaging with tentacles or creatures that have tentacles, Deysach says.

For some people, the eroticism comes from the slipperiness or the tactile idea of a tentacle, she says.

"For others the tentacle fantasy is connected to fantasies of being restrained by or being 'forced' into sexual situations by an otherworldly creature," she says.

Note: As a quick scroll through retailers like Early To Bed, Good Vibrations, or Babeland will make clear, the sex toy industry is exploding right now with dildos shaped like tentacles. "This kink seems to be on the rise as more toys designed to help people explore the kink become available," says Deysach.

18. Urethral sounding

"Sounding is a sexual practice of inserting metal rods into the urethra," says sociologist and clinical sexologist Sarah Melancon with The Sex Toy Collective.

Medical term: The urethra is the tube that drains urine from the bladder to outside of the body.

While urethral sounding can be performed on anyone with a urethra, it's most commonly performed on the penis. The head of the penis is incredibly nerve-dense, and stimulating those nerves through urethral stimulation can be pleasurable for some people.

Plus, if you go deep enough you can touch the prostate, which may, in some cases, lead to a prostate orgasm.

19. Voyeurism

Voyeurism is a fetish where you get sexual gratification by watching other people engage in sex. It's considered a complement to exhibitionism, where you find it arousing to have sex while other people watch.

Ethically and legally speaking, this kink can get tricky. "Folks spying on others without consent is a crime," Deysach says.

However, it's possible to set up consensual scenarios where you observe others having sex, she says. Consensual voyeurism could include attending sex parties, kink festivals, hiring a cam girl, or paying multiple sex workers.

20. Wax play

Sure, you've heard of lighting candles to set a mood — but wax play goes beyond creating an ambiance. Wax play is a type of sensation play that involves dripping wax onto your partner, or having it dripped onto you.

Some people are into wax play because it feels like dancing with danger, others are into it because the heat of the wax feels erotic when juxtaposed to the cool air of the bedroom.

Insider's takeaway

Sex, no matter where it falls on the vanilla to kinky spectrum, is designed to bring pleasure — and that holds true whether sex is solo, partnered, or multi-partnered.

Adding elements of kink can be a wonderful way to infuse even more pleasure, intimacy, and spice into your sexy time.

Just be sure you and any potential partner(s) you're exploring your kinks with prioritize consent, communication, and education over all else. "Before you try any kink, it's best to educate yourself on how to explore that kink safely," Finn says.

In a partnered setting, you also want to communicate about your individual limits and boundaries before getting down and dirty. Then, communicate from start to fireworks, they say. Communication, after all, is a prerequisite for pleasure.