"Eternally grateful !" joke
John is down on his luck in Las Vegas. He has gambled away all his money and has to borrow a dime from another gambler just to use the men's room. The stall happens to be open and he uses the dime in a slot machine and hits the jackpot.
He takes his winnings and goes to the blackjack table and turns his small winnings into a million dollars.
Wealthy beyond his wildest dreams, John goes on the lecture circuit, where he tells his incredible story. He tells his audiences that he is eternally grateful to his benefactor, and if he ever finds the man he will share his fortune with him.
After months of speaking, a man in the audience jumps up and says, "I'm that man. I was the one who gave you the dime."
"You aren't the one I'm looking for. I mean the guy who left the door open!"
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