Poor John, indeed. Really, the man never had a chance. Between Dean and Sam, he was screwed before he ever got started.

And I think Sam is "outside the box" enough that he would think nothing of having an imaginary "brother" who also happens to be an African lion. He strikes me as very much the kind of kid who would have obsessed over whatever was interesting him at the time.

John's just lucky Kurt didn't turn out to be an imaginary T-Rex or something. ;^D