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Superman has probably seen his parents have sex
(programming.dev)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
He may have been on the other room but his x-ray vision and super hearing means he knew exactly what was happening.
If he has x-ray vision shouldn't he just be seeing a bunch of bones or other dense objects not penetrable by x-rays? Can it be shut off? How? Are we sure he wasn't responsible for a drastic rise in cancer rates by going around just blasting everyone with his radiation vision all day?
While he can turn off his laser vision I am going to go ahead and say he cannot turn off x-ray vision. Superman only identifies people based on skeletal structure.
Is there a one-shot somewhere about people around superman getting cancer due to his x-ray vision? I think it would be an observable phenomenon if his eyes always worked in this manner.
Like watchmen