The episode contains several Ghostbusters references: The title refers to the lyric "I ain't afraid of no ghost" from the theme song; one doctor thinks he sees a ghost and wants to call Bill Murray; a little black boy is wearing a Ghostbusters costume (with the No Ghost logo blacked out for copyright reasons) in the costume contest; that little black boy is referred to as "little Ernie Hudson" (Ernie was the black actor who played Winston Zeddemore in the movie Ghostbusters), and the little boy appears again after the end credits to say "I ain't afraid of no ghost".