1.When Rachel royally burned Ross about his performance in the bedroom after she learned that he didn't read her 18-page letter.
2.When Rachel's sister, Amy, insulted the importance of his PhD compared with doctors who have a medical degree, and Rachel couldn't help but agree with her.
3.When Ross insisted that his flirting skills successfully worked on Rachel in high school, and she retaliated by letting him know how ineffective they actually were.
4.When Rachel called out his gloating, sexist behavior after the gals lost to the guys in a game of poker.
5.When Ross told her that having Braxton Hicks contractions while pregnant wasn't a big deal, and she immediately cut him off.
6.When Rachel confronted Ross in front of his entire class after she learned that he lied about annulling their marriage.
7.When she made fun of him in Central Perk for whitening his teeth for a date.
8.When Rachel was in labor with Emma, and she called Ross out on his ridiculous priorities as soon as they arrived at the hospital.
9.When Ross kept condescending to Rachel during the gang's Thanksgiving football game, so she let him know how fed up she was.
10.When she and the gals laughed in Ross's face and refused to take him seriously after he had his "older-brother talk" with Chandler.
11.When Ross tried to talk to Rachel during an important fashion lecture, and she wasn't afraid to silence his overbearing and controlling presence.
12.When Rachel took Emma to Ross and Monica's childhood pediatrician, and couldn't wait to expose Ross once she found out he still went to him as an adult.
13.When Rachel and Ross were brainstorming baby names at Central Perk, and she didn't fully agree with his ideas.
14.When Rachel took the phone from Ross and hung up on his girlfriend, Julie, because she was secretly in love with him.
15.And when Rachel teamed up with Phoebe at their apartment and taught Ross a thing or two about self-defense, Unagi-style.