Guy goes into a bar and asks the bartender, “If I show you a cool trick, can I have a free drink?”
Bartender says, “If the trick is cool enough, sure.”
Guy reaches into his coat pocket, and pulls out a tiny rat and a tiny piano. The rat stretches his arms, and starts playing rocking rhythm and blues tunes, a la Ray Charles. The bar goes crazy.
Guy asks the bartender, “If I show you an even more impressive trick, can I get free drinks for the night?”
Bartender says “I don’t know what you can do to top that, but sure!”
Guy reaches into his pocket and pulls out a frog, which immediately stands on his hind legs. The rat starts rocking the piano with a Stevie Wonder tune, and the frog starts belting out in an amazing baritone voice. The rat and frog do a couple of tunes and the bar goes nuts, and the guys gets his free drinks. A bar patron comes up to the guy and says “I’ll give you a thousand dollars for that frog!”
Guy says “No thanks, he’s not for sale.”
Patron says “10,000!”
Guy says no. Patron says “50,000 cash!”
Guy says, “Well OK - $50000”, and they do the deal.
Bartender comes up to the guy a little later and says, “Man, I think you’re crazy to sell that frog. I think he’s probably worth millions.”
Guy says, “Nah, he’s worth nothing. The rat’s a ventriloquist.”