What is Marcy Handshake?
1.
When you diddle a man's grapes with the tips of your fingers in a rhythmic motion - usually while a "deedle deedle deedle" noise occurs in the background.
Dude, I got this chick wasted at the bar and she totally gave me a Marcy handshake in the handicapped stall of the mens room!
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The most ghetto of Fairfax County Public Schools. Rivaled only by Annandale High School, who only has any say because they are almost t..