swapping skins

The act of two men masturbating each other. Heard mentioned by the police on the Showtime series "Brotherhood".

Maybe they are swapping skins. Said about two guys going into a dark alley.

by SuperMunch April 17, 2009

slapping skins

The act of one's skin slapping upon another's skin during the act of coitus non-interruptus

Whilst slapping skins it is best to find a secluded area unless admission fees are collected.

by Friendlee69 April 14, 2014