This guy is sitting in a bar drunk, he asks the bartender where the bathroom is at.
The barkeep tells him to go down the hall to the right.
All of a sudden, everybody at the bar hears this loud scream and wonders what is going on in the bathroom. A few minutes go by again and everybody at the bar hears another loud scream from the bathroom again.
This time the bartender goes into the bathroom to investigate what the drunk is screaming about. He opened the door and asked the drunk, "What's all the screaming about in here? You are scaring all my customers away!"
The drunk said, "I'm sitting on the toilet and every time I go to flush it, something comes up and squeezes the hell out of my balls."
With that, the bartender opens up the door and looks in and says, "No wonder, you're sitting on a mop bucket!"