mop butt
Mop butt is the act of getting a mop shoved up your ass.
Omg did you hear that Tyler got mop butted?
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."
mop butt
Mop butt is the act of getting a mop shoved up your ass.
Omg did you hear that Tyler got mop butted?