Hancock Park, Los Angeles. 6pm. Halloween night.
Mother, carrying plastic cup of Chardonnay: Look, honey, it's Glenn and Barbara's house. Go say "Happy Halloween, Glenn and Barbara!"
Child, perhaps three years old, dressed in full Princess regalia: I just want their candy.
Mother: Go say "Trick or Treat." Be sure to call them by name! Say "Trick or Treat, Glenn and Barbara."
Child: TRICK OR TREAT.