Quote Originally Posted by Christmas View Post
You mean X-ray vision so that you can peep through clothes.
In most incarnations of 'wishing', getting x-ray vision gives you the ability to see a person's bones and organs, but not their naked bodies.

In a story of Superman, he was able to see that a friend of his was getting cancer, but couldn't do anything about it [and it's superman ffs - he can do anything]. I think it was a fanfic, because no writer of Superman is that good.