"Congratulations! It's a beautiful ba...by... uh, heh, nurse?"
"Oh for heaven's sakes, can't you tell it's a... well..."
"It doesn't matter," the newborn's father interrupted. "We have a son and a daughter already. I guess now we have one more of both."
The doctor smiled in relief at being let off the hook, but couldn't help wondering, what color blanket to use?