It's not plausible to do that. So teach them what it is and that it's stylized and unreal. Tell them that you don't want it on the family computer or the family wifi. Teach them to identify and despise misogyny. Teach them how to resist peer pressure. Teach them that society has weird ideas about what counts as real sex, or improved or advanced sex, when in reality it's just a thing adults do to express closeness and have fun.

And then they will regulate themselves.