Season 7: Episode 148: The One With Rachel's Book
Joey thinks Rachel has porn when he finds an erotic book under her bed. He proceeds to make fun of her constantly and even tells Ross about it. Furious, Rachel decides to play Joey at his own game. Monica discovers her parents spent all the money from the "Monica wedding fund" on their beach house. When Chandler sees how disappointed Monica is that she can't have the wedding she always wanted, he offers to spend their savings to giver her dream wedding. Chandler tells her he would have liked their savings to go towards buying a house or their children's education, but Monica wants to be happy. Monica realizes that what will make her happy is simply marrying Chandler. Phoebe looses a massage client and it is partly Ross's fault. Ross feels bad and agrees to pay Phoebe for a weekly massage until she gets a new client.