A little fella walks into a bar. Unfortunately, there is a pile of dog crap just inside the door (work with me here), and he slips in it and falls over. He gets up, cleans himself up and walks to the bar and buys a drink.
A great big man then enters the bar. He slips in the same pile of shit, falls, gets up, cleans up and buys a drink.

The little guy turns to the big guy and, trying to strike up a conversation, points to the pile by the door and says, "I just did that."

The big guy punches him in the mouth