If you Google the word 'porn' and look at the images you'll get an idea what a curious tween or teen will see (and they certainly are probably curious at that age)
First image for me is rear view of anal, second is I'm not entirely sure (cum filled stretched anus I think) third is a gaping woman being cumed on by many men.
At a glance there wasn't much in the way of 'ordinary' sex.
(I just googled this and discover my providers' "family filter" evidently do not work.)