I said to my boss the other day, "I need to leave early today, I'm going to be a father!" He replied, "Of course! Take the afternoon off." When I returned to work the next day, he came to my desk, smiled and asked, "Well, how'd it go? Is it a boy or a girl?" I shrugged, "I don't know..." "I'll tell you in nine months!"

— upjoke.com