Trick or treating is when you go from car to car, or house to house at any month of the year and steal what ever you can. Since you're going to be going in their neighbours car there is no forced entry in trick or treating due to the sound factor (you can do it if you're quite). Unlike on halloween the best time is later at night when everyone's sleeping.
hey man you wanna go trick or treating tonight?
yeah, i'll bring the screw drivers and exacto knife for the decks