dirty mop bucket
Where a man with diarrhea shits in a girl's mouth. Then, as she holds the feces in her mouth, the man dips his penis into her mouth and proceeds to make mopping motions on her body with his shit-covered penis.
Guy #1: Dude, did you hear all the commotion coming from the dorm across the hall last night?
Guy #2: Hell yeah! Andy must have been giving Savannah another dirty mop bucket.
Guy #2: Hell yeah! Andy must have been giving Savannah another dirty mop bucket.