While the boys head to Jay's for a testosterone-fueled sleepover, Jessi throws a party of her own and gets caught up in mean-girl drama.

A classmate's booming bosom sends the boys into a rapture -- and leaves the girls with a raging case of insecurity. Coach Steve drops a bombshell.

An argument in sex ed class turns into a skit-tastic journey through the worlds of Planned Parenthood, contraceptives and STDs.

A school sleepover turns messy as Nick dishes on a makeout session and the Shame Wizard works his miserable magic on the whole class.

After traveling through a magic portal to puberty headquarters, Nick seeks out a new Hormone Monster and Jessi bonds with the Depression Kitty.

When a shop class mishap inspires a sexist dress code, Jessi rebels, Missy struggles to keep her alter ego in check, and Andrew gets a wake-up call.

Cellsea goads Nick into posting a risqué video, Maury urges Matthew to speed things up with Aiden, and Jay feeds Missy ideas for her erotic fiction.