Hey kiddo, have you ever been playing a game or looking at a website and suddenly, out of nowhere, a little box or window pops up on your screen? That's called a pop-up ad!
Pop-up ads are kind of like surprise guests. They suddenly appear on your screen without you inviting them. They are ads that try to get you to look at or buy something. Sometimes they even jump around the screen, making it hard for you to close them.
Some people don't like pop-up ads. They think they're annoying because they interrupt what they are doing online. Some people even think they're bad because they can show things that aren't appropriate for kids to see.
But sometimes pop-up ads can be helpful too. They can show you things you might be interested in, like new games or cool toys. So, it's important to always be careful and make sure you only click on pop-up ads that are safe and appropriate for you!