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When a man lathers one of his hands on his testicles, giving them a warm and sour texture, and in a light, playful manner, slaps another person.
John was being a little bitch at the game, so afterwards I came up behind him and gave him the old Musty slap
by The guy on the couch. June 08, 2009

Words related to musty slap

mad must musty payback slap sweat testicles