Okay kiddo, so imagine you and your friends love watching football games on TV. Sometimes you even argue about which players are the best.
In fantasy football, you get to be like a coach and pick your own team of players. You can choose any player from any team, but you only have a certain number of spots on your team.
Every week, you play against one of your friends and you both pick your best players. The players on your teams get points based on how well they do in real life games.
For example, if your team's quarterback throws a touchdown pass, you get points. If your team's defense gets a sack or an interception, you get points.
At the end of the week, whoever gets more points from their players wins the game. Then you play against a different friend next week and so on.
It's a fun way to keep track of football games and see who's the best at picking players. And it's all just pretend since you're not actually playing on a real football field!