Top Definition
1. (n) a man's penis
2. (v) a woman who partakes in the slamming of her vagina against her cohorts vagina.
1. I'm gonna whap that girl in the face with my gash masher.
2. Dude, I was at a party last nite hitting on this chick, and then she told me she was a lesbian. "I was like man, fuck that gash masher!"
by Team JPD March 26, 2003

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