Shawn has a problem - his best friend and his brother can't stand each other. But the real problem is the friend is imaginary and just refuses to leave.
Did You Know?
Ironically, the only episode based on a short story from R.L. Stine
compilation in "The Haunting Hour"; the other nine based on his short stories were all taken from "The Nightmare Hour". (However, one of these, "The Most Evil Sorcerer", had a sequel in "The Haunting Hour", "The Dragon's Bargain", though it was never adapted for the show because the first short story was only adapted loosely with no way to tie in the sequel). See more
This is Travis' idea, isn't it? I don't know why you hang out with that guy, anyway.
He's my best friend!
...He's your imaginary friend.
He says that like it's a bad thing!
References Fight Club