A hotel guest walks into the rooftop bar. He tell the bartender, “I bet you a $100 bar tab I can jump off that balcony and be totally fine!”
“Sure, whatever,” says the bartender.
The man gets a running start and leaps off the balcony. A few minutes later he comes running back into the bar soaking wet and laughing.
“The hotel pool is under that balcony,” he laughs. “You owe me $100 in drinks!”
A week later, the same guy comes into the bar and tells the bartender the exact same thing.
“I bet you a $100 bar tab I can jump off that balcony and be totally fine!”
“Sure, whatever,” says the bartender.
The man gets a running start and leaps off the balcony.
Another man sitting at the bar turns to the bartender. “Hey,” he says, “Don’t you remember that guy from last week? I can’t believe you fell for that trick again!”
The bartender says, “And I can’t believe that guy didn’t notice they’ve drained the pool for cleaning.”