Definitions by Sid the Janitor

butt-mop

the phenomenon of having excess hair on one's rear-end. Said excess hair is usually located on but not limited to the butt-cheek area. May also be located around the sphincter and thus contribute to the barking spider phenomenon.

"Eww Bobby, don't moon us, that's gross. I don't wanna see your butt-mop."

butt-mop by Sid the Janitor March 27, 2008