the painted horse

A pissed-off cowboy walked into the bar and slammed his fist on the bar.

"Ok," he shouted, "Who's the son of a bitch that painted my horse's balls red?"
At the other end, a huge biker stood up, ripped the end of the bar out of the floor and slammed it back down.

He said, "I did asshole. What have you got to say about that?"

"Oh," said the cowboy. "I just thought I'd let you know... he's ready for his second coat."