One day, shortly after the birth of their new baby, the mother had to go out to do some errands, so the proud father stayed home to watch his wonderful new son.
Soon, the baby started to cry. The father did everything he could think of, but the baby just wouldn't stop crying. Finally, he got so worried that he decided to take the infant to the pediatrician.
After the doctor listened to all the father had done to get the baby to stop crying, he began examining the baby's ears, chest and then down to the diaper. When he opened the diaper, it was indeed full.
"Here's the problem," the doctor explained. "He just needs to be changed."
The perplexed father remarked, "But the diaper package specifically says, 'good for up to 10 pounds!'"