On the night of October 31 western countries children will dress as devils take to persuade friends to celebrate. Decorated with lights importantly, the carved pumpkin lanterns called jack-o'-lantern. Popular Halloween celebration held in the United States, Ireland, United Kingdom, Canada, and also in Australia. With New Zealand, with including countries in Europe, always held on Halloween for fun. Trick-or-treat, is an activity for children on or around Halloween in which they proceed from house to house in costumes, asking for treats such as confectionery with the question, "Trick or treat?" The "trick" part of "trick or treat" is a threat to play a trick on the homeowner or his property if no treat is given. Trick-or-treating is one of the main traditions of Halloween. It has become socially expected that if one lives in a neighborhood with children one should purchase treats in preparation for trick-or-treat.