Season 9: Episode 17 - Not In My Mouth

Not In My Mouth: ­Walden can’t get Zoey to say that she loves him, and while she goes off to England, he becomes increasingly convinced that she’s going to dump him. While leaving Zoey’s apartment Walden meets a woman, Jennifer, on the elevator and decides to invite her home. However, it backfires when Zoey catches a glimpse of Jennifer when she online chats with him before she boards her plane to London. Walden jumps on his private jet to England to apologize to Zoey and brings Alan and Lindsey along as his witness to vouch that nothing happened between he and Jennifer. Lindsey has been drinking a lot lately and ends up vomiting on the flight over. Jake and Jennifer end up hooking up.