A mangy looking guy who goes into a restaurant and orders food.  The waiter says, "No way.  I don't think you can pay for it."

The guy says, "You're right.  I don't have any money, but if I show you something you haven't seen before, will you give me the food?"

"Deal!" replies the waiter.

The guy reaches into his coat pocket and pulls out a hamster.  He puts the hamster on the counter and it runs to the end, across the room, up the piano, jumps on the keyboard, and starts playing Gershwin songs.  And the hamster is really good.

The waiter says, "You're right.  I've never seen anything like that before.  That hamster is truly good on the piano."   The guy downs the hamburger he ordered and asks the waiter for another.

"Money or another miracle," says the waiter.

The guy reaches into his coat again and pulls out a frog.  He puts the frog on the counter, and the frog starts to sing.  He has a marvelous voice and great pitch.  A fine singer.  A stranger from the other end of the counter runs over to the guy and offers him $300 for the frog.

The guy says, "It's a deal." He takes the three hundred and gives the stranger the frog.  The stranger runs out of the restaurant.

The waiter says to the guy, "Are you crazy?  You sold a singing frog for $300?  It must have been worth millions."

"Not so," says the guy, "the hamster is also a ventriloquist."