The man says, "I'll show you, but only if you get me a beer."
So of course the bartender gets the man a beer. The man drinks it. He pulls out a tiny human from the box, then a tiny piano. The little man sits down and starts playing the piano with skill.
"Wow!" exclaims the bartender. "That's amazing! Where did you get him from?"
"For another beer, I'll tell you," says the man. So the bartender gets the man another beer. The man drinks it and says: "I got it from a genie."
"Really? A real genie??" says the bartender. "Do you think I could borrow him for one little wish?"
And for another beer the man agrees, but warns: "Speak loudly - he's 3,000 years old and a little deaf.”
The bartender gets the man another beer. The man drinks it and gives the bartender the lamp.
The bartender rubs the lamp and the genie pops out, looking very old. "Master, I grant you one wish. What is it?" says the tired old genie.
"I wish for a million bucks!"
All of a sudden a million ducks start flying into the room. "What the heck is this?!? I wished for a million bucks not a million ducks!" shouts the bartender in anger.