A man gets really drunk at a bar and asks the bartender for the bathroom. The bartender points to the bathroom and the man complains about having to take a serious shit and runs towards it.

A few minutes later the man screams in agony, stops, then screams again. The bartender goes to check it out and yells to the man, "What the hell is going on?"

"Everytime I press the lever, I feel like my balls are getting crushed!" the drunk yells.

"You drunk bastard," the bartender replies, "you're sitting on the mop strainer again!"