Slapping an erect penis against pussy.
Man, I could hear him slap the wood from the other room!
When a guy, typical a bro or frat boy-type guy, can't handle his alcohol and passes out on one of two hotel beds, and you bang his hot girlfriend on the other bed.
Man, last weekend when I was in Vegas there was this frat boy bombed out of his mind at the blackjack table. So when he passed out, I executed a steal and deliver. Ha HA!