trick or chiefin
Rather than Trick or Treating, this term is for students to indicate that they are chiefin and getting turkeyed/cooked/baked/fried on halloween, and then going out to their neighborhood and getting candy from houses to serve as munchies.
Peter: Yo, what you doing on Halloween?
Anthony: I'm going trick or chiefin, you down to join?
Peter: That's a bet
Anthony: I'm going trick or chiefin, you down to join?
Peter: That's a bet