Top Definition
Two or more men facing one another in a shower with flacid penises, shaking their hips in order to make contact with the other soft penis or penises. The process ends when all penis' are hard or any of the participants pass out from any other dudes' cuteness.
Yo dude, let's go get clean! Let's get some tallywhackin' done!
by J. Futtbuck and D. Peluso Inc. February 21, 2011

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