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1 definition by Man Lee Man

the act of female masturbation.

can be used as an insult as well as a verb in the same way as wanker is used both as a pejorative and to describe the act of a man masturbating.
"is she mashing it"


"that chick is such a masher"


if a woman cuts you off in traffic you can yell "you fucking masher"
by Man Lee Man October 31, 2010