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

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.

Lola hits the jackpot — in more ways than one. Missy takes her dad to Elijah's church. The Birches make a plan to get rid of their new housemate.

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.

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.

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.

While Jessi sorts through her feelings for Ali, Nick joins Devon for a boys' night, Andrew shows off his new persona, and Missy starts a rumor online.

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

A DNA test leads Nick to uncover a wee family secret. Jay insists on introducing Matthew to the Bilzerian clan. Andrew puts his lovebug to the test.

Big Mouth goes global for a very special episode as Maury and Connie take a closer look at how kids around the world experience puberty.

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.

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.

Andrew struggles to keep the Hormone Monster in check as he works with Missy on a science fair project. Jessi and Matthew have fun at Jay's expense.

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 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.

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.

As Walter the love bug coaches Nick on matters of the heart, Jesse gets fired up about protesting the school's problematic mascot.

Missy tries to show her cousins she's not a dork, Andrew takes a stand against his dad's turkey tyranny, and Jesse hopes for a Thanksgiving miracle.

A viral quiz about naughty deeds sparks arguments and unlikely new friendships. Matthew plans a baby shower for Maury.

With two months left in eighth grade, the incoming freshmen tour their new high school with junior hosts while Jay evades his terrifying brothers.

With no distractions, Andrew's schoolwork improves — winning his father's praise. Jessi goes a little too far when trying to emulate cool, mature Leah.

At their first high school party, Andrew discovers his talent for drinking games, Nick hopes for a shot with Danni, and Missy meets a potential rebound.

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.

A trailer for a new movie starring The Rock leaves Andrew questioning his sexuality. Jessi and Nick's budding romance turns ugly fast.