Fast food is food that you can get really quickly, without having to wait too long for it. The food is usually already made and just needs to be heated up or assembled before you can eat it.
Think of it like going to a drive-thru, where you can order your food and have it ready to eat in just a few minutes. That's what fast food is all about - convenience and speed.
Fast food can include things like hamburgers, hot dogs, pizza, tacos, and fried chicken. These foods are often high in calories, fat, and sugar, which can be bad for our health if we eat too much of it.
It's okay to enjoy fast food every once in a while as a treat, but it's important to remember to balance it out with healthy food choices like vegetables and fruits.