Two pirates walk into a bar, err sorry, two POLICEMEN walk into a bar.

The bar is a shady sort, classic barkeep spits in a glass, and polishes it with a dirty tablecloth.

The policemen sit down each on his own bar stool, but the stools have been recently polished, and one of them slips falling on the floor and snagging his pants on the stool, making them drop to his ankles.

The other policeman in an effort to help his partner, reaches down to help, only to be pulled down by his partner, snagging his own pants while falling and landing crotch-to-butt on top of his partner! Now this is starting to stir up quite the commotion and people are starting to notice this trouble. They both start writhing with pants snagged trying to stand up only for the rubbing to accidentally escalate into a bit of sweaty greasy butt-action, making things even more awkward for the already red-faced policemen! At this point they start pushing and grunting trying there hardest to wriggle out of this position.

A guy told this at a stand-up competition broadcast live a few years ago and nobody in the audience laughed, and nobody watching with me, except for me. It's still one of my favorites :D It kind of has to be told verbally and the more time for "The aristocrats" style shenanigans you have the better. I like to tell it at meetings with clients and then enjoy the crickets once nobody laughs except me :D