Season 8: Episode 3 - A Pudding-Filled Cactus

A Pudding-Filled Cactus: Alan is living with Lindsey but uses Charlie's house to hook up with his ex-girlfriend Melissa. Charlie wants his house back and convinces Alan to dump Melissa and go home with be with Lindsey. Alan accidentally burns Lindsey's house down, by leaving a lit pipe on the table, sending Alan, Lindsey, Jake and Eldridge to stay at Charlie's.