"What would you like?" says the barman.
"What would I like?" says Bob. "A bigger house, more money and a more attractive wife."
"No," says the barman, patiently. "I meant what do you want?"
"To win the lottery, for my mother-in-law to die and for my child to be born healthy!"
"What's it to be?" says the barman, less patiently.
"A boy or a girl, I don't care."
"You misunderstand me," says the barman, impatiently, "I only asked what you want to drink."
"Oh," says Bob, "I see. Why didn't you say so? What have you got?"
"Nothing at all," says the barman. "I'm perfectly healthy."
Link:
http://www.ijokes.eu/index.php/joke/category/misunderstanding