I watched Blade Runner one night and my parents decided that they wanted to watch too. They didn’t even flinch at any of the shooting, or eyeball-crushing, or any of the other violence, but that one second of a woman’s breasts made them panic until well after the scene was over.
That is a general problem with society (and parents). They are mostly fine with kids watching abnormal stuff like shooting and violence, while on the other hand they try to hide normal things like nudity and sex from the kids.