The Joys of Fatherhood

Sam picked up his wife Becky and their new baby from hospital and brought
them home. It was not long before Becky suggested that Sam try his hand at
changing a diaper.
"I'm busy," he said. "I promise I'll do the next one."
The next time soon came around so Becky asked him again.
Sam looked at Becky and said, innocently, "I didn't mean the next diaper, I
meant the next baby."