Definitions by murf09

man-back 

When you are fucking a girl doggie-style and her back is hunched over.

Steve: Hey, I heard you fucked Diane last night.

Ted: Yea I was hitting it doggie but she had man-back and it really turned me off.

Steve: That sucks, my girl arches it perfectly.

man-back by murf09 July 1, 2009