Well then, for your reading pleasure...
Penis - Male sexual organ. AKA-Cock, Wang, Willy, Weiner, Tube Steak
Vagina - Female sexual organ. AKA-Pussy, Cunt, Beaver, Pink Taco
Sexual Intercourse - Any time the penis is inserted into the vagina. Some also consider oral sex and anal sex sexual intercourse. AKA-Getting Laid, Fucking, Knocking Boots, Bumping Uglies, Boning
Oral Sex - Stimulation of the male/female sexual organs using the mouth. AKA-Oral, Going down, Blowjobs (given to males), Giving Head (given to males), Cunilingus (given to females), Carpet Munching (given to females, usually referring to lesbians)
Anal Sex - Sexual intercourse where the penis is inserted into the anus. AKA-Anal, Buttfucking, Fudge Packing, Putting Willy Wonka in the Chocolate Factory
Masturbation - Using one's own hand or other objects to stimulate their own sexual organ. AKA-Wanking, Fapping, Beating off, Spanking it, Self-pleasure
Salad Tossing - Stimulation of the anus using the mouth.
Hmm, that should just about cover the basics you'll find on the site.