There are three guys sitting in a bar, when another man comes in and starts drinking. After a while he approaches the guys, and, pointing at the one in the middle, shouts: "I've fucked your mom!"

The three guys look bewildered as the man bellies back up to the bar. Ten minutes later he comes back. "Your mom's sucked my cock!" he yells at the one on the right. Then he turns around and staggers back to the bar. Fifteen minutes later, he walks up to the third guy, gets in his face and yells, "I've had your mom up the ass!"

The young men have had enough. The one in the middle stands up, pushes the old man into a seat and shouts,

"Look, Dad, you're drunk, go home!!!!!"