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1. penis shake
when two guys are naked and stand too close to each other or run into each other and their penises touch it is known as a penis shake. sometimes resulting in a dongknot.
after the big game, the guys hit the showers. tom carelessly walked into ben and gave him a penis shake.
2. penis shake
a sexual favor a girl gives a guy. commonly called a handjob or hj
dayummm, that girl gives a great penis shake!