Squirting (from English "squirt" - a jet) is the expulsion of a certain amount of clear fluid during or before female orgasm from the vagina.
Rimming (synonyms: Anilingus, Anilinctus, Anilingus; from Latin "anus" - anus + "lingo" - to lick) is a variant of anal foreplay in which sexual satisfaction is achieved by stimulating the anal area (anus) of the partner with the tongue and lips.
Fisting - a sexual act involving the fist: in the case of vaginal fisting, the vagina is stretched until the fist is inserted; also, a specific form of anal sex where a fist is inserted into the rectum instead of the penis.
Coprophilia or Scatophilia - sexual attraction to various manipulations with the feces of a sexual partner.
Mixoscopia - the desire to observe a couple engaging in sexual intercourse.
Fetishism – sexual attraction to a body part, clothing, or any object symbolizing a sexual partner. There are many varieties of fetishism.
Foot Fetish - involvement with a partner's feet.
Pissing – observing someone urinating in their underwear.
Shitting - observing someone defecating in their underwear.
BDSM (Bondage - binding + Domination - domination + Sadism - sadism + Masochism - masochism) - a multifaceted abbreviation that encompasses all manifestations of consensual "dominance-submission" relationships.
Dildo – (from English "dildo") – the name for a dildo commonly used in America and other English-speaking countries. Usually refers to a male genitalia replica without vibrating functions. Dildos are made from various materials, with rubber or silicone gel varieties being the most widespread.
Golden Shower – a form of sexual contact where one partner engages in urination on the other. The need to be the passive partner (on whom urination occurs).
Necking - mutual caresses and fondling without touching the genitals.
Petting - intentional orgasm achieved through artificial stimulation of erogenous zones in conditions of mutual contact that exclude direct genital contact.
Spank, spanking (from English "spanking") - slapping, impact on the buttocks with the hand, belt, or other objects.
Blowjob, also known as Minet (Russian) - oral sex performed on a male.
This is a general description, but it would be helpful to know in what format members express their preferences. Are there any specific abbreviations commonly used?