Next on ‘Accidentally on Purpose’: Fight Club

As the title “Fight Club” hints, a big fight is the main event during the new November 2 episode of CBS’ Accidentally on Purpose.

At odds are mismatched expecting parents Billie and Zack, who…

…get into their very first fight over a toilet. Really. Apparently, Billie’s not too pleased when Zack tries to pull a fast one on her by installing a low-flow toilet in her apartment.

The “Fight Club” promo follows. And as a special treat, CBS also has a longer behind-the-scenes clip with series regular Nicolas Wright, who plays Zack’s silly friend Davis. He gives viewers an inside look at the cast filming a promo.

Accidentally on Purpose airs Mondays on CBS at 8:30pm ET.