A man walks into a bar and orders a drink. He notices a jar full of money on the counter with a sign that says, "Winning bet challenge: $500 to anyone who can pass three tests."
Intrigued, the man asks the bartender about the challenge. The bartender explains, "First, you have to drink an entire bottle of hot sauce without flinching. Then, you have to go out back and pull out my tooth with a pair of pliers. Finally, you have to go upstairs and make love to my grandmother."
The man pauses for a moment and thinks about it, then decides he's up for the challenge. He chugs the bottle of hot sauce, tears streaming down his face but no flinch. He staggers out back and you can hear screams and the sound of teeth being yanked out.
Finally, the man heads upstairs and the sounds of a struggle can be heard through the walls. After a few minutes, the man comes back downstairs, exhausted and disheveled.
The bartender looks at him in shock and asks, "What happened up there?"
The man catches his breath and says, "Well, I'll tell you what happened. That grandma may not have any teeth left, but she sure can bite!"