"Fool's literature" refers to stories or jokes that are meant to trick or deceive someone. It's like when someone tells you a story that's not true just to see if you'll believe it.
For example, if someone tells you that pigs can fly, they're not really trying to teach you facts about pigs or aviation - they're just having some fun and trying to see if you'll believe something silly.
People have been making fool's literature for a really long time - even back in ancient Greece, people would tell funny stories that were meant to trick others. Sometimes these stories are called "fables" or "tall tales."
The important thing to remember is that fool's literature is just a type of entertainment - it's not meant to be taken seriously or believed as fact. It's okay to laugh and enjoy the story, but you should always ask questions if you're not sure if something is true or not.