12-inch pianist

 There is this guy who walks into a bar and notices a man 12 inches tall playing the piano. He asks what it is all about and the barman tells him he'll tell him later. 

So he asks the barman for a drink and the barman says, 
'Before you get your drink you get to rub the magic beer bottle and make a wish.'

'OK,' says the guy. 

He goes to the bottle and rubs it and, boom, out comes a genie, who says, 
'You have one wish.'

The man thinks about it and then wishes for a million bucks. A cloud of smoke fills the room and when the smoke clears there are a million ducks crowding the bar.

He tells the barman, 
'Hey, I didn't want a million ducks.'

The barman replies, 'You think I wanted a 12-inch pianist?