The moment, which takes place in the season 6 episode "The One Where Chandler Can't Cry," sees Rachel (Aniston) and her younger sister Jill (Witherspoon) in the middle of a tense argument that centers around Jill wanting to date Rachel's on-and-off-again boyfriend Ross (David Schwimmer).
While reminiscing over a photo from their time on set together, Aniston asked, "Is this where you say the line that you love so much?"
"Well, we could say the lines," Witherspoon replied. "Do you remember your line?"
NBC/Getty Images Jennifer Aniston and Reese Witherspoon on 'Friends'
When Aniston appears to struggle to remember the dialogue — the original episode was released back in 2000, after all — Witherspoon covers both of their faces with the photo and lends some help. Aniston then remarks, "I say, 'You can't have Ross.'"
"'Can't have? Can't have?" Witherspoon fires back. "The only thing I can't have is dairy.'"
For casually recalling a scene over two decades later, the stars nearly nailed exactly how the exchange originally played out on screen. In the episode, Witherspoon and Aniston's characters get into an argument at Central Perk that sees Jill demanding to know why Rachel is "always so jealous" of her.
Rachel's response? "This is not about me being jealous of you, this is about you being a brat and wanting what you can't have," which causes Witherspoon to utter her iconic comeback and stomp out of the beloved coffee shop.
It's a smooth moo-ve that Witherspoon still appreciates to this day. She captioned her post, "This line gets me every time."
Even The Morning Show official account poked fun at the special bond between Aniston and Witherspoon, writing, "Before they were cohosts, they were friends."
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