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When a girl spreads her legs wide open and the guy then rapidly smacks/spanks/"smutts" her v*gina.
Pervert's friend: Hi dude, how was your date yesterday?

Pervert: Aw man I gave her a really bad smutt fuck, she almost began to bleed.

Pervert's friend: Dude that's sick.
by Teh_inventioneer December 04, 2006
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