Halloween is an annual holiday celebrated in many English speaking countries on October 31. Children wear costumes and they go to people's homes saying "Trick or treat!" to ask for sweets. This comes from a threat. It means, "Give me a treat or I will play a trick on you." Children today usually do not do the tricks if they do not get treats. But some children still do mischief (pranks or things to make fun of people like putting toilet paper in trees or writing with soap on windows or throwing eggs at their house). People sometimes wearing costumes and attending costume parties, ghost tours, bonfires, visiting haunted attractions, pranks, telling scary stories, and watching horror films.In Poland thanks to this occasion, are held many cultural events in nightclubs, theater performances and film screenings in cinemas for adults.Schools and kindergartens organize additional attractions for their pupils.