The VolunteerA bloke walks into a bar with a pet crocodile by his side. He puts the crocodile up on the bar. He turns to the astonished patrons. "I'll make you all a deal. I'll open this crocodile's mouth and place my pecker inside. Then the croc will close his mouth for one minute. He'll then open his mouth and I'll remove my pecker unscathed. In return for witnessing this spectacle, each of you will buy me a drink." The crowd murmured their approval.
The man stood up on the bar, dropped his trousers, and placed his pecker in the crocodile's open mouth. The croc closed his mouth as the crowd gasped. After a minute, the man grabbed a beer bottle and rapped the crocodile hard on the top of its head. The croc opened his mouth and the man removed his unit - unscathed as promised. The crowd cheered and the first of his free drinks was delivered.
The man stood up again. "I'll make you another offer. I'll pay $100 to anyone who's willing to give this a try". A hush fell over the crowd. After a while, a hand went up in the back of the bar. A timid young man spoke up. "I'll try, but only if you promise not to hit me on the head with the beer bottle".