Top Definition
A popular party game, many men (ideally 10 or so) gather in a room while one guy gets on his knees blindfolded, then one random guy puts his penis in the blindfolded man's mouth, the blindfolded man must then guess who's in his mouth.
Me and the other guys got together last night and played "Guess who's in my mouth" all night.
by dickman 2.0 April 10, 2010

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