Trick-or-treating is when people get dressed up in costumes on Halloween and go door-to-door in their neighborhood asking for candy. It's like going on a treasure hunt but instead of finding gold or jewels, you find candy!
When you go trick-or-treating, you knock on doors and say "Trick-or-treat!" which means you're asking the person in the house to give you some candy. They'll usually give you a piece of candy or a small bag of candy, like a little present.
It's important to only go to houses that have their porch light on, as this shows they are participating in giving out candy. It’s not polite to go to a house that doesn't have their lights on or to go to a house that doesn't give out candy.
Also, make sure to stay safe while trick-or-treating. Walk on the sidewalks, cross the street only at designated crosswalks, and always watch out for cars. It’s always best to bring a grown-up or a group of friends with you too.
In summary, when it's Halloween and you're wearing a costume, you can go door-to-door in your neighborhood saying "trick-or-treat" to ask for candy, but only from houses with their lights on, and always stay safe!