A girl who is a skank and spreads her legs for anyone to get what she wants. Most of the time its for drugs or just to back stab friends by fucking there boyfriends or the close friends ex's... Most of the time the smutts name is SYDNI.
Jessica and Harry were smutting behind the bathrooms today!
Or
John: Hey, Barbara, wanna smutt?
Barbara: Yes please!
Or
Holy shit! Ashley and Charlie smutted!!