A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50."
The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less.
In the end the boy ended up paying the man $50. How did the man win the bet?
Okay, here is one that may last awhile...
A man and a woman were driving in their car when it broke down. The man decided to go for help at a gas station a few miles back. He made sure nobody else was in the car ,rolled all the windows up, and locked all of the doors. He went off to the gas station but when he came back, his wife was dead, and there was a stranger in the car! No physical damage was done to the car, so how did the stranger get in?