"Hamster and The Frog" joke
A guy enters a bar and orders a drink. "Hey," he says to the bartender, "if I show you the most amazing thing you've ever seen, is my drink on the house?"
"That depends on what you're going to show me," the bartender replies.
So, the guy pulls a hamster and a tiny piano out of a bag, puts them on the bar, and the hamster begins to play the piano.
"Impressive," says the bartender, "but I'll need to see more."
"No problem," the guy says. He then pulls a frog out of the bag and it starts to sing Old Man River.
Another guy sitting at the end of the bar jumps up and yells, "That's incredible! I'll give you $200 bucks for the frog."
"Sold," the guy says. The other guy takes the frog and leaves.
"It's none of my business," the bartender says, "but you just gave away a fortune."
"Not really," the guy replies. "The hamster not only plays the piano, he's also a ventriloquist."
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