Pirate television is when people send TV signals out into the world without getting permission from the people who own the TV channels. Imagine if you had a secret TV station in your backyard and you broadcasted your own TV shows for people to watch. That's what pirate television is like. But, just like stealing toys from your friends without asking is not nice, pirate TV is also not nice because you're taking something that doesn't belong to you. It's important to always ask for permission before using something that belongs to someone else.