Halloween is on October 31. It's about kids dressing up in scary costumes and going door-to-door asking for candy. This is called trick-or-treating. When children knock on the door of a house or ring the doorbell, they usually say "Trick or Treat". The "trick" part is a fake threat signaling that the kids will commit a prank if they aren't given something delicious. Homeowners then give the children candy, raisins, or some other food treat. Many homeowners decorate their houses to prepare for the holiday and let kids know that they are participating and can ring the bell for candy. Traditional decorations often include jack-o'-lanterns, which are pumpkins with faces carved into them and candles inside.