Three cowboys are sitting around the fire when one of them starts to brag.
"I'm the roughest toughest cowboy around here, the other day a stampede of buffalo came right at me. I just stood there and they bounced off my chest"
"I'm the roughest toughest cowboy around here, the other day I stepped in a pit of rattlers. I didn't get sick, not even a sniffle. I went by later, and all the snakes were dead"
The third cowboy just sat there, quietly stirring the coals with his penis.