With a big dance approaching, FOMO's everywhere: Missy misses school, Matthew dives into the deep end — and Andrew suspects that Other Andrew is evil.

Jessi and Jay pair up to parent a melon "baby," Missy faces her fears, and Nick and Other Andrew try to fit in with a group of ultra-rich kids.

After Nick has a sudden growth spurt, Ms. Dunn takes the class inside the body of a teenager to learn about the wonders of puberty.

A reckless Lola gets behind the wheel, and Jessi and her mom have a really big fight. Nick's mother finds his "special shirt" while cleaning his room.

Depression Kitty convinces an anxious Jessi to care less. Nick attracts Devin's attention, and the Robotics Club takes an overnight field trip.

Matthew explores his sexual preferences, Nick says the wrong thing, and Missy uses Andrew to make Nate jealous. Jessi finds a surprise on Camden's phone.

Connie recruits a Compassion Pachyderm to teach the kids how to see things from another point of view. Andrew sets out to steal Missy's man.

Missy's Lovebug steps in to solve a problem, and Jessi practices enthusiastic consent. Nick tries life without porn. Lola gives Jay's dog a makeover.

In honor of the show's next-to-last episode, Maury and Connie dive into the "Big Mouth" mailbag to answer curious fans' burning questions.

As the kids creep closer to adulthood, a memorable finale takes them back to where it all began to say goodbye — and face the future.

Elijah tries to figure out why he doesn't have the same urges as his friends. A jealous Andrew hops a train to Vermont to surprise Bernie

From itching to grooming to late blooming: There's no shortage of fodder for shame maven Rita St. Swithens in this special episode.

Nick follows Walter to the land of monsters and demands to see the person in charge. A New Year's Eve party inspires a flurry of grand gestures.

The voice of a slick, new tech accessory hypnotizes people into doing things they wouldn't normally do. Missy grapples with the concept of sin.

Andrew takes a liking to his new neighbor — and her mom. Nick wants to be more than Danni's friend, but her entanglement with Travis gets in the way.

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.

The ghost of Duke Ellington takes Nick and friends on a journey back in time to 1913: the year he lost his virginity and found his true calling.

While Andrew and Nick deal with parental crises, Jessi meets her new sibling, and Matthew realizes he's made Jay into a different person.

As Andrew falls under the spell of the randy Hormone Monster, his buddy Nick becomes obsessed with the lack of changes in his own body.

The kids at Bridgeton Middle explore enthusiastic consent, feminine pleasure, coercion and more in four short films.

Nick is bewitched by his cool new phone. A call from "Pharmacy Boy" turns Matthew into a nervous wreck. Jay finds a Netflix show made just for him.

While helping Greg move into a seedy bachelor complex, the boys and their dads debate what women want -- and what it means to be a man.

Nick drags Andrew into the city to visit an old camp crush, but the day doesn't go as planned. Jay embarks on an emotional journey with his pillow.

On the last night of camp, bowel problems, a talent show and a hookup lead to hurt feelings. Back home, Jay and Lola throw a pool party.

Classic holiday stories get a naughty makeover in this special episode hosted by puppet versions of Maury and Connie.