Time to quit drinkin

This guy’s been at the bar, drinking beer, for quite a while.
Finally he gets up and wobbles his way into the (one-holer) restroom.
After a few minutes, there is a shout from inside, then silence.
Everyone in the bar looks for a few seconds, then they go back to their conversations.
Another shout from inside the restroom. The place goes quiet, then conversations resume.
A third shout from the restroom.
The bartender walks over to the restroom door, knocks, and says “You OK in there?”
A voice from inside replies “Every time I try to flush the commode, something squeezes the Hell out of my balls!”
Everyone in the place starts shaking their head, and the bartender replies:
“You Dumb Ass, you’re sitting on the Mop Bucket!”