Alan's girlfriend, Melissa, throws him a surprise 40th birthday party which goes horribly. During the party Berta, Charlie, Evelyn and Jake ridicule and belittle Alan so incessantly that Melissa insists that he come and live with her and her pot addled mother. Thrilled to be living in a loving and caring environment, Alan is just starting to get comfortable when he unknowingly samples some of Melissa's mother's pot laced banana bread. Melissa then walks in on her mother and Alan in a compromising and embarrassing position. Meanwhile, Charlie is surprised to find that he actually misses Alan, and Jake barely notices he's gone.
