Okay kiddo, have you ever seen Mickey Mouse on TV or in a book? Well, some colleges and universities have silly classes called "Mickey Mouse Degrees" that are like pretending to study about him and his friends. But it's not really a degree that can help you get a job in the real world. It's more like for fun or just a waste of time and money. So, when someone talks about a "Mickey Mouse Degree," they usually mean that it's not very serious or useful for your future. Just like how you might love watching Mickey Mouse cartoons, but you can't learn anything useful for school or work from them!