Okay kiddo, imagine you want to share your toys with your friends, but sometimes you don't want to share them with some mean kids who break them or take them away. That's kind of like what happens with torrenting and torrent poisoning.
When grown-ups use something called "torrenting," they share files with other people who also want them. Sometimes, companies or groups who don't like people sharing these files try to stop it by using a trick called "torrent poisoning."
It's like those mean kids who want to spoil your fun, but instead of toys, they mess with the files people are sharing. They might put fake or bad copies of the files in the torrent, so people download something they don't really want. Or they might even put viruses in the file to harm people's computers.
So, it's important to be careful when you're sharing files with other people online. Always make sure you're getting the right file from a reliable source, and be careful if something seems too good to be true. And if you ever come across something that seems like it's been "poisoned," just move on and find a different source to download from.