On one of the Sanford websites that have sound clips, one of the clips has Fred saying "You big dummy, see what you did, you broke the spell!" I wonder if anyone knows what kind of "spell" he is talking about, and could give some info about that episode? Thanks!

Fred was being hypnotized, to rid him of pain from a toothache and Lamont came in and interrupted the session.
Episode : Tooth or Consequences (Second season)

Thanks Junkologist!