When Edd and Eddy yell "COME BACK ED!" Eddy lifts up a bit of Edd's hat, revealing some baldness. This is either an animation oversight or Edd is actually bald.
Jimmy's newfound knowledge of scamming is later used in "If It Smells Like an Ed", "Stuck in Ed," "Cleanliness Is Next to Edness," and "Tinker Ed."