A man walks into his everyday bar with a box and orders a drink. The bartender sees that the man looks troubled, so he asks what's in the box. Instead of replying, the man takes out a small grand piano and a tiny stool, and on the stool is a miniature man about a foot tall who starts playing the miniature piano. The bartender asks, "Where did you get a thing like that?"
The man says, "I rubbed a lamp in the desert, and a genie popped out. The genie said he'd grant my heart's desire, but he was hard of hearing and thought I had asked him for a twelve-inch pianist."