The act of enticing a partner (usually a girl as most men will do anyone/thing) to have sex with you when they have said no. Usually involves caressing, teasing (v. important), stroking, kissing, and general foreplay.
Posh Kid #1, "Hey, Rupert, fancy one of our spiffing games tonight?"
Posh Kid #2, "Rather Percival! How about a game of digestive biscuit?"
Posh Kid #3, "Excellent! There's no way I can possibly lose four times in a row!"