Okay kiddo, do you know what X-rays are? They are special kinds of light that scientists use to take pictures of things inside your body. X-ray vision is when people imagine they can see-through things, like walls or clothes, just like how X-rays help people see-through your body. But, in real life, X-ray vision doesn't exist like in the movies. Even if someone had X-ray glasses or eyes, they would only be able to see bones and other hard things, not everything that's inside. Also, X-rays can be harmful to your body, so it's better to leave this kind of thing to the doctors and scientists who know what they're doing.