Season 10: Episode 224: The One with the Late Thanksgiving
Monica doesn't want to host Thanksgiving until Phoebe suggests that she see it as a competition with herself, to top her previous year. Phoebe convinces Rachel to enter Emma in a baby beauty pageant. Joey gets tickets to a hockey game and he and Ross go, even though it could conflict with the Thanksgiving dinner. Rachel, Phoebe, Joey, and Ross are all late for dinner, angering Monica and Chandler, who didn't want to host the dinner anyway. At the height of the conflict, Monica gets a call from the adoption agency telling them they're getting a baby.