Nasreddin was walking down the street with a big smile on his face. He went into a cafe and ordered himself a glass of milk and some sweets, all the while beaming with pleasure.
"Nasreddin," said the owner of the cafe, "you are looking so cheerful today. Could it be that you have some good news?"
"You are correct," explained Nasreddin, "and it is the best possible news. You may congratulate me, in fact, for I am a father!"
"Congratulations!" replied the owner. "That is wonderful news indeed. Is it a boy or a girl?"
"Yes!" replied Nasreddin. "But how did you know?"