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Like shamwow, it's an adjective that's usually used to describe a girl's butt. Usually when it's round and fantastic.
Bro 1: Dude check out dat assssss.
Bro 2: Brah, that's mad smangin.
by triple-wasted March 13, 2013
Derived from the song " LEMME SMANG IT" from Yung Humma ft Flynt Flossy of Turquoise Jeep Records, "Smangin" describes a very attractive girl. She is smashin and bangin.
dang that girl is smangin!
yeah man, we're totally going to smang.
by youtuberules July 02, 2011