Joey's new girlfriend wants to go to bed with him, but Joey's participation in a fertility study is preventing this. During Rachel's birthday party, Chandler accidentally lets it slip that Ross is in love with her.

As Monica's biological clock ticks away like a time bomb, Carol goes into labor. When Ross and Susan can't stop bickering over who gets to help Carol more, Phoebe drags both of them into a closet to settle their differences - but all three end up getting locked in just as Carol's about to give birth to the baby. And Rachel flirts with an OB/GYN who has a love-hate relationship with women's private parts.

After losing his virginity to her, Monica's boyfriend Young Ethan reveals that he's a high school senior. Rachel has erotic dreams about Joey and Chandler, making Ross both disgusted and envious. And when Phoebe temps as Chandler's secretary, she finds out that no one at work likes him anymore.

When Monica's credit card is stolen, she, along with Phoebe and Rachel, decide to catch the thief. Joey enlists his friends to help him come up with a less ethnic-sounding stage name. And when Ross finds out that Marcel has reached sexual maturity and needs to be with other monkeys, he tries to get him accepted into the Harvard of zoos.

Rachel and Barry start dating again, which is kind of awkward because he's now engaged to Mindy, who wants Rachel to be her maid of honour. But when Rachel finds out that Mindy and Barry had an affair while she was engaged to Barry, the two women decide to give Barry what for. Meanwhile, Chandler goes nuts when a woman he likes won't return his phone calls.

The gang searches frantically for Marcel, who slipped out of the apartment while Rachel was baby-sitting him. After Marcel is found and safe, Ross finally gets up the courage to try to woo Rachel. But just when it looks like the two might actually spend a romantic evening alone together, Barry, the ex-Mr. Potato Head, barges into the apartment declaring his love for her.

Tired of being referred to by customers as "Excuse me," Rachel interviews for a job as an assistant buyer at Saks Fifth Avenue. She also sees another side of the usually docile Ross when the girls face the boys during a not-so-friendly game of poker.

Joey falls for Phoebe's twin sister, Ursula, making Phoebe feel neglected. Meanwhile, Chandler finds himself between a rock and a hard place, when he is told to fire an employee he is attracted to. And Ross has doubts about parenthood when he attends Lamaze classes with Carol and Susan.

Monica cooks a gourmet meal for a restaurateur looking for a new chef. Unfortunately, he's stoned and would just as well eat taco shells as her haute cuisine. After working as a data processing permanent temp for five years, Chandler gets promoted to data processing supervisor, then quits. And Ross has a date with a beautiful colleague named Celia and gives new meaning to the term "spanking the monkey," when he brings her back to his place to meet Marcel. Celia wants to meet his pee-pee, but only if he'll talk dirty to her.

Ross's first date in nine years is on Valentine's Day with a beautiful neighbor. Susan and Carol, also out on a romantic date; end up at the same restaurant. Joey sets Chandler up on a blind date - with Janice. And Phoebe, Rachel and Monica decide to spend the holiday building a boyfriend bonfire in their apartment.

After Chandler accidentally sees Rachel wandering around topless after her shower, a chain reaction of nudity ensues when she tries to even the score by seeing his penis. Joey finds himself playing parent when he has to decide whether to hide his father's affair from his mom. And no one can stand Phoebe's new boyfriend, an irritating guy named Roger.

Everyone knows the sex of Ross's baby except for Ross, who doesn't want to find out until it's born. Rachel's relationship with Paulo hits a snag when he makes a pass at Phoebe. Monica makes a dozen lasagnas for her aunt, only to discover that her aunt doesn't eat meat.

Chandler's romance novelist mom comes to New York to visit him and he's not sure how he feels about it, especially after Joey catches Mrs. Bing and Ross kissing. Meanwhile, Monica and Phoebe compete for the "attention" of Coma Guy, who gets hit by an ambulance after Monica woo-woo's at him on the street.

The gang makes and breaks a pact to celebrate New Year's Eve without dates. Ross compensates for his loneliness by getting a roommate - a monkey named Marcel whom everyone adores. (Well, everyone except Monica, who can't get past the feces-throwing thing.) Phoebe faces a difficult decision when she meets a shy physicist who's thinking about giving up a fellowship in Minsk to stay with her.

Monica burns her first Thanksgiving dinner as the Underdog balloon gets away, Joey become a poster boy for VD, and Ross sings to his unborn child.

Nana dies twice, Monica and her mother come to an understanding, Ross falls into an empty grave, and everyone at Chandler's office thinks he's gay.

There's a blackout in the city, Chandler gets stuck in an ATM vestibule with Jill Goodacre, and Ross attempts to tell Rachel that he has feelings for her.

Chandler starts dating a beautiful woman, who is not only married, but has another boyfriend. Chandler is thrilled at the prospect of having "all the fun but none of the responsibility," but eventually learns that it's not all it's cracked up to be. And, speaking of cracks, Joey gets cast as Al Pacino's "butt-double" and gets fired for overacting.

This is the one where Joey tries to make an old girlfriend jealous and tricks Monica into posing as his new girlfriend, Ross teaches Rachel how to do laundry, and Chandler recruits Phoebe to break up with Janice for him.

This is the one where Ross mourns the anniversary of losing his virginity to Carol while at a hockey game with the guys. Rachel gets her first paycheck, the girls have a slumber party, and George Stephanopoulos's pizza is delivered to Monica by mistake.

This is the one where everyone likes Monica's new boyfriend way more than she does, Chandler starts smoking again, and Phoebe finds a thumb in a can of soda.

Carol, Ross's lesbian ex-wife, tells him at work that she is pregnant with his child, Monica nearly has a breakdown when her parents come for dinner, and Rachel finds out that Barry and her maid of honor Mindy, went on her honeymoon.

This is the one where it all began... Rachel leaves Barry at the altar, meets the gang, and moves in with Monica. Monica, meanwhile, sleeps with Paul the Wine Guy, and Ross is reeling from his divorce from Carol, who has become a lesbian.