Here's a joke I heard that I thought was really funny:

Being a parent changes everything, and it changes with each baby. Here is how having a second and third child is different from having your first.

Your Clothes

1st baby: You wear your regular clothes for as long as possible.
2nd baby: You begin wearing maternity clothes as soon as your OB/GYN confirms your pregnancy.
3rd baby: Your maternity clothes ARE your regular clothes.