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2.
A recently coined term in which someone (usually male) takes a dump on a girl's hair. For this to be entirely accurate, she must have long, blonde hair, and it must be diarrhea.
if a bitch don't respect you, she will after a good ol' dirty mop.
by Gooch Master Eric June 13, 2004
 
1.
When you're at a club/bar and you take a girl in the bathroom, bend her over, wrap her legs around your waist, and mop the floor with her head.
After Andy politely asked everyone to leave the lady's restroom at Player's Dance Club, he gave Caroline the dirty mop.
by Iceman November 09, 2004