Ted:What ?
Terry: They dress in scary costumes.
Ted: ?
Terry: Witches, wizards, vampires.
Ted: ?
Terry: They go from door to door, they knock and say: "Trick or treat? "
Ted: ?
Terry: They give the children sweets .
Ted: ?
Terry: The children play a trick on them.
Ted: ?
Terry: It's a lamp made from a carved pumpkin and a candle.