The Mommies

For Valentine's Day, Carol decided to surprise Paul by getting her tubes tied so they don't have to worry about having another baby. However, Paul's gift to Carol is getting a vasectomy. He talls Jack, Jack tells Marilyn, and Marilyn tells Carol. When Carol finds out, she decides not to have her tubes tied. However, when Barb drives Paul to the doctor to get the vasectomy, he chickens out and the two are having sex without birth control unknowing. After a test, Carol learns she's not pregnant.

A stray dog wonders in the yard, and the four kids agree to take turns taking care of him, but it's the mommies that end up doing all the work when the kids neglect their duties. To see if the kids would notice, Carol & Marilyn have the dog taken away, but the dog returns to them sick.

The mommies feel unappreciated after going out of their way to help their kids and husbands on Halloween. So while they're out Trick-or-Treating, the mommies turn the Larson house into ""The Mommies' House of Horror."" They pull their own pranks on everyone to get evenwith them being unappreciative. Danny - Carol puts him in a desk chair with a thinking cap and makes him sit there until he writes a thank-you note to his grandmother. Blake - Force him to talk to a girl he has a crush on. Casey - Marilyn has Adam do her math homework, and makes her do the corrections, but it's difficult to do since she's dressed as the Golden Gate Bridge. Adam - Marilyn shows him Tiffany kissing a pizza delivery boy. Jack - Marilyn makes him put on his wedding tuxedo (to show that time has taken its toll). Paul - Carol invites her mother to move in with them.

Marilyn accompanies Carol to have her first ultrasound. When Carol dashes off to use the restroom, Marilyn secretly finds out the sex of the baby (which Carol doesn't want to know). This knowledge leads to awkward moments between the two until the make their peace in the end.