After Alan and Charlie have a fight about Alan's role in the house, Alan packs Jake up and moves in with his mother. Evelyn and Teddy don't want Alan there and go to great lengths to reconcile the siblings.

Charlie writes children's songs and finds success as Charlie Waffles. The kids and their parents love him, even signing CD-s of his jingles. However, Charlie's new found fame irritates Alan.

Charlie & Alan are introduced to Teddy's daughter Courtney. Teddy warns Charlie to stay away from her but Charlie, unaware of what she is capable of, sleeps with her and then gets blackmailed into buying a new Ferrari.

The truth comes out on the paintball field.

Penny's ex-boyfriend asks Leonard for a huge favour.

A rival team of physicists tries to take credit for Super Asymmetry.

Phoebe's half-brother visits, but they have trouble bonding. Joey attempts to build an entertainment centre whilst Ross is challenged to name the five celebrities he'd like to sleep with the most.

When Janice asks the gang if any of them have ever slept together, the friends flash back to a time three years before, where some dark secrets are revealed.

Joey sees Janice and her soon-to-be-ex-husband, "The Mattress King", kissing. Rachel attempts to have her father and Ross bond but things don't go as planned and Joey gets a job teaching a soap opera acting class.

Joey tells Chandler he saw Janice kissing her ex-husband. Monica accidentally bumps Ben's head against a post and Phoebe is convinced she's cursed because every time she goes to the dentist someone around her dies.

After Alan and Charlie have a fight about Alan's role in the house, Alan packs Jake up and moves in with his mother. Evelyn and Teddy don't want Alan there and go to great lengths to reconcile the siblings.

Charlie writes children's songs and finds success as Charlie Waffles. The kids and their parents love him, even signing CD-s of his jingles. However, Charlie's new found fame irritates Alan.

Charlie & Alan are introduced to Teddy's daughter Courtney. Teddy warns Charlie to stay away from her but Charlie, unaware of what she is capable of, sleeps with her and then gets blackmailed into buying a new Ferrari.

The truth comes out on the paintball field.

Penny's ex-boyfriend asks Leonard for a huge favour.

A rival team of physicists tries to take credit for Super Asymmetry.

Phoebe's half-brother visits, but they have trouble bonding. Joey attempts to build an entertainment centre whilst Ross is challenged to name the five celebrities he'd like to sleep with the most.

When Janice asks the gang if any of them have ever slept together, the friends flash back to a time three years before, where some dark secrets are revealed.

Joey sees Janice and her soon-to-be-ex-husband, "The Mattress King", kissing. Rachel attempts to have her father and Ross bond but things don't go as planned and Joey gets a job teaching a soap opera acting class.

Joey tells Chandler he saw Janice kissing her ex-husband. Monica accidentally bumps Ben's head against a post and Phoebe is convinced she's cursed because every time she goes to the dentist someone around her dies.

Alan learns Charlie stole away a girl he liked in high school. Seeking revenge he steals Charlie's French girlfriend Gabrielle. However, things don't really work out like he planned due to Gabrielle's behaviour in bed.

Alan is unhappy about his sex-life with his new girlfriend Donna and breaks up with her. Charlie helps a now-free Jake hit on a girl while the two are out dining but it ends up with Charlie getting pepper sprayed.

Charlie sleeps with a woman who is sick & catches her flu. With nobody in his family there to look after him, Rose (back from England) offers her help. Alan feels Jake is pulling away from him which makes him feel sad.

Charlie sleeps with a woman who is sick & catches her flu. With nobody in his family there to look after him, Rose (back from England) offers her help. Alan feels Jake is pulling away from him which makes him feel sad.

Sheldon must choose between his friends or following the rules.

Penny tries to divert Leonard's plans to be a sperm donor.

The guys try to crash Wil Wheaton's celebrity D&D game.

Emotions become the feast of the day when the gang plays a game of touch football. Joey & Chandler argue over who gets to date a beautiful Dutch woman and Ross & Monica argue over winning in a case of sibling rivalry.

Rachel makes a rash decision after Gunther tells her she needs retraining. Phoebe tries to help Joey when he gets a job selling Christmas trees and Ross accidentally breaks a girl's leg and tries to make it up to her.

Ross is suspicious about Rachel's possible job offer from a good-looking stranger. A drunken Chandler fools around with one of Joey's sisters but can't remember which one.

Ross becomes jealous when he thinks he catches Rachel's new co-worker whispering sweet nothings in her ear. Joey is forced to teach a very hard dance to an entire Broadway cast after lying on his resume.