A guy walks into a bar and tells the bartender, "If I show you something really amazing will you give me a free beer?"

The bartender says, "Sure." So the guy pulls out out a hamster and the hamster breaks out into a song and starts dancing.

The bartender says, "Hey that's really amazing!", and gives the guy a free beer.

So the guy says again, "You wanna see something even more amazing?" And once again the bartender says "sure." The guy pulls out a tiny piano, he also pulls out the hamster and a frog too. This time, and the frog begins to sing and the hamster plays the blues, after they're done the bartender says "That IS amazing."

A man in a suit, sitting in the corner was watching the whole time and says, "That frog's amazing, I'll buy him off you for a hundred bucks."

The guy says "Sure!" and sells the frog.

The bartender is aghast and says to the guy, "Why'd you do that? You could have made a fortune off that frog!"

The guy says "Can you keep a secret?"

"yeah."

"The hamster is a ventriloquist."