 The episode was written by series co @-@ founders Trey Parker and Matt Stone , along with writer Philip Stark . The episode was the first of a new slate of South Park episodes Parker and Stone made after Comedy Central agreed to permanently pick up the show . The duo were not happy with the episode , particularly the ending , and were surprised by the positive response it received from fans . Parker said he also wanted the episode to convey , in part , that Halloween is a positive holiday for children . 
