1 definition by Kevin Regan

Top Definition
When one party hits a second party's genitals with the back of their opened hand. They must also say, "Gershwin," for it to count.

Try it on a friend today...or better yet and unsuspecting stranger.
Tim and Jon are singing in chorus when Snyder sneaks up behind them. Snyder says, "Hey guys." They turn. SLAP! "Gershwin!"

#slap to nuts #slap #smack #speed bag #punch to the sack
by Kevin Regan April 11, 2006
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