After an arguement breaks out, Ross appoints Joey as his best man, replacing Chandler. On Ross's stag night, Joey sleeps with the stripper. The next morning, he awakes to find Ross's engangment ring - a Gellar family heirloom - has gone! Meanwhile, Phoebe is experiencing vast mood swings, causing her to become bitchy towards Rachel and Monica. Trying to cheer her up, the girls decide to throw her a baby shower. Trouble is, Phoebe won't be keeping the babies, so they and all of Phoebe's friends give her presents she can use after her pregnancy, with diasterous results.