BYM is the acronym for beat your meat
Also see BMM
Guy 1: Dude, I have a fun game. Try to see how fast you can BYM. It relieves stress!
Guy 2: BYM?
Guy 1: Yeah! Beat your meat!
Guy 2: Ah! Okay, I should try that sometime. I'll so shatter your record.
© 1999-2015 Urban Dictionary ®
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