Accidentally on Purpose

Billie is having popcorn and is looking at their expensive water bill when Zack and Davis sneak into the kitchen carrying "the spooooooon", their invention to scoop food from the table from a distance. After Zack sees that his uncooked ribs are no longer in the refrigerator, Billie confesses that she ate them all the previous night.

Later at the salon, Billie relaxes during her waxing session. Meanwhile, Zack and Davis carry a used toilet Zack bought from Craigslist to Billie's place. Locking himself out of the apartment, Zack calls Billie and borrows her key, forcing her to leave with only half of her crotch area waxed.

At the office, Billie confides her secret to Olivia about her uncompleted waxing and her complaints with having to live with Zack. James approaches her and tells her about this vineyard he's planning to buy in Napa.

That night, Zack sneaks into Billie's poorly lit bathroom and accidentally pees on Billie, who is sitting on the toilet. Zack tells Billie that his bathroom isn't working since he's been trying to surprise Billie with a new low-flow toilet to help with the water bill situation. Irate with being peed on and having her other bathroom broken, Billie yells at Zack, who points out that when he was living with Davis, these things weren't that big a deal to them.

Zack tells Ryan and Davis about the peeing incident and decides to fix the toilet before things between him and Billie get even worse.

While having coffee and snacks with Abby and Olivia, Billie reminisces on the simpler times when she and James were still dating. She then tells them about the peeing incident and Zack's attempt to install the low-flow toilet. Abby and Olivia make her realize that Zack was only trying to be helpful.

Billie brings home some makeup ribs for the boys. Zack then shows her the fixed toilet in his bathroom. While watching the game, Billie finds out that Zack his buddies about her being half-waxed. This starts another fight between Zack and Billie, who kicks the guys out of her apartment.

After talking to James and analyzing their previous relationship, Billie realizes that not all people are like him and that some people want to have someone else by their side even if relationships are sometimes hard.

In the meantime, at the back of Zack's van, he ponders upon his status with Billie and how much he's freaked out about their situation. Zack and Davis assure each other that whatever happens, they will be there for each other.

While eating ribs in her living room, Billie feels a kick from her baby. Excited, she runs out to Zack's van to tell him about it. Zack touches Billie's tummy and feels nothing. But after she takes a bite off a spare rib, Zack feels the baby kick. Zack apologizes for telling the guys about her half-waxed crotch. The two finally make up and Billie invites Zack back into the apartment.

During her session with Dr. Roland, he sees the "seven" and gets a laugh out of it.