Mastilagnia refers to deriving sexual pleasure from whipping or being whipped.

Mechanophilia describes sexual attraction to machines including trains, bicycles, planes and other mechanical devices. If machines turn you on, you might want to check out this very lifelike robot girlfriend who offers both conversation and sex!

Milking the Prostate refers to the process of stimulating the male prostate gland with a finger or other object inserted through the anus. The term “milking” often describes a prostate massage that culminates in ejaculation.

Muff Diving is slang for cunnilingus or going down on a woman. Looking for a few tips on muff diving? Click here!

Mooseknuckles is a term used to describe the outline of the male genitals revealed through tight pants, shorts or other clothing.

The Kangaroo Sex Position involves one partner crouching on all fours with the knees bent while the insertive partner crouches and penetrates from behind. They can thrust and hop around like kangaroos. Good on ya, mate!

Karezza involves prolonged, intimate sexual intercourse without the goal of ejaculation or orgasm. It often refers to penetrative sex involving deep affection, devoted touch, spiritual connection, little movement and partner bonding. Though some people may scoff at sex without the goal of orgasm, practitioners describe it as a love meditation that deepens relationships, embraces the sacred elements of sex and induces states of sexual ecstasy. Though the practice of karezza takes time, commitment and patience to embrace, we can all extract elements from its philosophy without sacrificing pleasure. For example, the next time you’re having penetrative sex of any kind, try lying completely still for a minute or two and breathing in unison with your partner. ...

Happy new year! Here’s to a very sexy and safe 2011.

Delving back into the alphabet, we arrive at one of my favourite letters — good old “J”.

Here are a few fun sex terms to get you started in the new year:

Jeeping: Engaging in sex acts in the back of a car or jeep.

Jerkin’ The Gherkin: You guessed it! A slang term for male masturbation

Jousting: Slang term for double-penetration, which involves the insertion of two objects (often penises or dildos) into one orifice (often a mouth, vagina or anus).

Joydogging: Stealing or breaking into cars to engage in sexual activity.

Joygasm: A moment of intense pleasure derived from any non-sexual or sexual activity.

Icing refers to the act of using your hand to spread ejaculate on your partner’s face or other body part as though you’re icing a cake. We all knew that cake decorating 101 course would come in handy someday!

Iconolagnia involves erotic arousal from viewing nude photos, sculptures or statues.

Interfemoral Intercourse refers to the act of thrusting the penis between your partner’s thighs often with friction on the vulva, testicles or perineum. Sounds like some good old fashioned outercourse!

Intersex is a term used to refer to a biological variation in which a person is born with reproductive anatomy that does not seems to fit the typical definitions of male or female. There are a number of possibilities with regard to anatomical and chromosomal combinations for intersex people. Like all forms of sexual classification, intersex is a socially-constructed category, which doesn’t always reveal itself at birth. For more information, visit the Intersex Society of...

Handballing involves fondling the testicles with your hands often through the pockets of your pants.

Hentai (in Western use) refers to sexually explicit cartoons or animation.

Half-and-Half refers to purchasing sex services in which half the time is spent on oral sex and the other half is dedicated to intercourse.

The Hymen, also known as the vaginal corona, is made up of thin mucous tissue folds and is located just inside the vagina. Though many people believe that the hymen is a solid membrane that “pops” during vaginal sex, this is simply a myth. It is very rare for the mucous tissue folds to cover the entire vaginal opening and its appearance changes over time. The hymen can be worn away over time through a variety of other processes including hormonal changes, menstruation, regular discharge and masturbation.

The Helicopter is a sex position in which a woman lies on her back and a man lies on top of her to insert his penis. He then uses his hands and feet to turn...