Two broke and hungry best friends, Dave and John, go to a pastry shop.
Dave suddenly whisks three cookies into his pocket with lightning speed. The baker doesn't notice.
He says to John, "See how clever I am? You'll never beat that!"
John replies, "Oh yeah? Watch this."
He says to the baker, "Give me a cookie, I can show you a magic trick!"
The baker hands him a cookie which he promptly eats. Then he says to the baker: "Give me another cookie for my magic trick."
The baker is getting suspicious, but he gives it to him. He eats this one too.
Then he says again: "Give me one more cookie... "
The baker is getting angry now but gives him one anyway. He eats this one too.
Now the baker is really mad, and he yells, "And where is your magic trick?!"
John points at Dave and says: "In that guy's pocket!"