Lisa Calderon

Carol and Ross decide to have a threesome to spice up their marriage. Rachel goes to Joey's and kisses him. Chandler and Monica have sex and end up together anyway. Susan meets Carol. Rachel catches Barry cheating.

Rachel panics during a party in anticipation of her baby's birth when she realizes how totally unprepared she is to care for an infant. She reluctantly agrees to allow her frustrating mother, Sandra (recurring guest star Marlo Thomas - "That Girl"), to move in to help her, upsetting Rachel's roommate, Ross. Meanwhile, Monica tries to atone for forgetting to invite Sandra to the party. Chandler and Ross exhaust themselves by repeatedly playing a befuddling game in an effort to help Joey prepare to audition as a television game show host.

While Rachel sorts out her conflicted feelings for her handsome co-worker Gavin (recurring guest star Dermot Mulroney), Ross recruits Chandler to help him meet attractive women in order to make Rachel jealous. Meanwhile, Phoebe regrets bringing Monica to karaoke night when Monica takes the microphone and delights in the applause--unaware that the guys in the audience are cheering because they can see through her dress. And Joey submits to painful eyebrow waxing before a photography session. Recurring guest star Melissa George appears as Molly.