When Comic Book Guy casts Homer as the lead in “Everyman,” a feature film based on a new comic book superhero who possesses the ability to absorb the superpowers of every super hero in every comic he touches. To whip Homer into superhero shape, the movie studio hires celebrity fitness trainer Lyle McCarthy (guest voice Rogen), but Homer has trouble sticking to his new healthy regimen in the “Homer the Whopper” episode of THE SIMPSONS airing Sunday, Sept. 27 (7:00-7:30 PM) on FOX. The episode was co-written and guest-voiced by Seth Rogen.