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As well as being a conjunction of "smart fuck," smafuck is also:
The act of brown-bagging a woman, otherwise figuratively "cropping out" the woman's face prior to and during intercourse, as the term is derived from "smaf," hence "smafuck."
Yeah, bro, that chick was a butterface, so I smafucked that shit.
by TheRealNeverender January 02, 2009
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