Two friends walk up to a stranger at the top of a skyscraper's observation deck.
One of the friends asks the stranger, "Did know that the winds are so strong up here, that you can jump off and you will be blown safely back onto the ledge?"
Stranger says, "No way, I call BS!"
First guy says, "Watch me...I'll prove it!"
First guy steps onto the ledge, jumps, does a flip in mid-air and lands back onto the ledge.
Stranger can't believe what he just saw and says, "Holy cow that is amazing! Do it again!"
First guy steps onto the ledge a second time, jumps, does two flips and lands back onto the ledge.
Stranger exclaims, "Incredible....once more!"
First guy steps onto the ledge a third time, jumps, does three flips and lands back onto the ledge.
The stranger is now eager to give it a try. He steps onto the ledge, jumps ...and immediately falls hundreds of feet to his death.
The third guy says to his friend, "Geez Superman you can be a real a-hole sometimes!"