The One With The Flashback - S3-E6
Corrected entry: In the flashback episode, Chandler and Monica are in the bar (which is soon to become Central Perk) and Rachel is in the same bar with her friends before she is due to marry Barry. When Chandler overhears Rachel - a complete stranger - say she wants one last fling, he tries to flirt with her, but she dismisses him. Monica then says "I know her" and talks to Rachel briefly with Chandler present. In fact, as revealed in later episodes, Chandler and Rachel knew each other when he was in college with Ross and Rachel was in high school with Monica - in fact they even made out at a college party.
Correction: Then the mistake is in subsequent episodes, not this one. In any case, Chandler simply didn't recognize Rachel.
JC Fernandez
Or since Rachel was drunk at the college party, she has very vague memories and doesn't remember that night very well.
Rachel and Chandler had previously met several times before the college party and she was sober. Chandler was at the two consecutive Thanksgiving dinners at the Geller house when both Rachel and Monica were in high school. Rachel gave Monica hints on how to get back at Chandler for having called Monica "fat" the previous year. Rachel and Chandler should have remembered this.
raywest ★