Sick of being unwanted, Homer befriends a man who works as a roofer. However, no one else can see him and Homer's insistence that the roofer does exist prompts everyone to think he has gone crazy (again).
- Actor Allusion: Ray tries to remind Homer, and the audience by extension, to see Everybody Loves Raymond, which was ending its run around the time this episode originally aired.
- Not-So-Imaginary Friend: Ray Magini
- Significant Anagram: Ray Magini is an anagram for "Imaginary". It's lampshaded by Lisa in the end.
- With Family Like This: Marge and the family bitch Homer out like crazy about the house and stuff that happens due to the rain and when he gets a roofer to fix the roof and he takes forever to get back and fix the roof, they commit Homer to months of shock therapy because they jump to the conclusion that he's gone crazy.