[1] Monica, preparing the group's Thanksgiving Day dinner, receives a phone call from her and Ross's parents Jack and Judy, who are planning to join them.
She has chosen to make a traditional English trifle, which involves many layers of ladyfingers, jam, custard (made from scratch), raspberries, and beef sauteed with peas and onions, topped with bananas and cream.
Not wanting Rachel to begin again and delay their date with Janine's friends, Ross and Joey decide to convince everyone to pretend her "beef-custard thing" is actually delicious so as not to hurt her feelings.
Phoebe is unable to eat the dessert because she is a vegetarian and heads to Rachel's old bedroom to take a nap, which forces up a new dream in which Jack cheats on her, and she is swept off her feet by Jacques Cousteau instead.
This leads to a barrage of shouted revelations, ranging from childhood grievances to the fact that Monica and Chandler are living together, that Ross was fired from the museum, then married Rachel and got another divorce.