I doubt you touched a nerve. This episode is like over a decade old.
Earlier in the episode, Homer tried to save the life of Carl or Lenny, I don't remember, by throwing down an egg sandwich, saying it's bad for your health. The two of them reply something like "Oh, no, Homer. You got it all wrong, eggs are good for you." Homer notices the eggman and says "he got to you, too, eh?: or similar. The eggman runs away and isn't seen until the singalong.