U

Urophilia
The condition of being turned on by any act or action involving urine. Some people enjoy watching others or like to be watched urinating. Others like to urinate on their partner, or indeed be urinated on, as a part of the sexual act. This is more commonly referred to as Water Sports.Honest! We're not taking the piss!

Undinism
Being turned on by the thought or presence, of water.

V

Vampirism
Essentially a blood fetish: As the name suggests, those who indulge in Vampirism look to mimic their un-dead idols by consuming someone else's blood, often with sexual connotations and results. Although some people get kicks out of the outfits more than the real idea behind vampirism. A subculture, with clubs etc exists that involves willing participants as both Vampire and Victim. Claims of increased sexual potency are erm.. upto the individual to decide on.
See also Blood Sports, Hemotigolagnia and Menophilist.

Vanilla
A slang term used for straight, traditional sex (be that straight or gay). Not kinky, not complicated, nothing clever, just straightforward, 'how's your father'. Some might call it 'boring', others may say its about appreciating simple things done well.

Vibrators
Sexual toys, usually in the shape of a penis, that are inserted into the vagina (or sometimes anus) for sexual pleasure. Unlike a dildo, these have motorized mechanisms that create movement and vibration (hence the name) to further increase the stimulating sensation. Either mains or battery powered and rumored to have replaced diamonds as a girls best friend!

Vincilagnia
It's about being sexually aroused by the act of bondage, either as the restrictor or the restricted person.

Voyeur
This person gets their pleasure from watching sexual acts, or even just people naked, undressing etc. This can vary from being in the same room as people have sex without you joining in, to trying to get a quick glimpse as you pass a gym changing room with the door open.

W

Water Sports
Be careful what you say when your date asks you if you're into Water Sports. In this sense it refers to urinating on your partner, or being urinated on yourself, for pleasure itself or as part of foreplay.

Whipping (aka flagellation)
Striking a partner with a whip or similar object for either persons (or mutual) pleasure. Usually a large part of SM practice, the participants can be anything from teasing and gentle to vicious enough to break the skin!

X

Xenophilia
Being aroused by anonymous sexual encounters. A Xenophile will engage in sexual activities with either a masked individual (to hide the identity of their lover), or with strangers who's name they'll never ask.

Z

Zelophilia
This describes being sexually aroused by jealously, particularly if the individual is jealous themselves. Zelophiles become sexually aroused by the adrenaline rush that is produced by their body in response to the anger or fear of loosing their lover.

Zipper Sex
It's another name for to a swift sexual act (usually penetrative intercourse). This is quick, urgent sex, with a partner, that happens when both of you are fully clothed. Also see Quickie