Do you know what parody means? It's when you take something that already exists like a song or a story and make it funny by changing some of the words or the meaning.
A parody generator is a special computer program that helps you create your own parody songs or stories without having to think of all the words yourself. You just put in the original song or story and the generator comes up with funny versions of the words for you to use.
It's like a machine that helps you make really funny jokes by changing the words of something you already know. It can be really fun to use and can make people laugh a lot!