Back in the late '90s my first wife and I were at the zoo in Saint Louis, MO. A distinctly midwestern proudly socially conservative town. Lots and lots of good Catholics living down in the city where the zoo is. It was a weekend and there were lots of families and lots of teens at the zoo that day.
It gets cold there, so the primates are kept in indoor arenas (think giant terrariums) that separate the animal habitats from the humans with large glass window walls.
We’re walking through the crowded primate house and come upon a clutch of 8-10 pre-tween/tween girls pressed up against the glass staring silently / awestruck at … something. No adults nearby; whoever they’d come with was elsewhere.
I’m taller than most of them are, so I edge up to the back of their crowd & peer over the top. There’s a ~3-foot tall male monkey sitting “Indian style” just inside the window facing out and he’s masturbating to beat the band. For his scale his penis is longer but narrower than a human’s would be. But otherwise very similar. His technique is exactly what a human male would use.
The girls were fascinated. Nobody said anything. I backed off before they noticed me. As I’m telling my wife a few feet away what was going on a couple of 40-something women walk up to the crowd of girls, let out a shriek, and herd the girls away in evident horror. That’s chaperone horror; the girls were just disappointed the show had ended.
It would be really neat to live in a world where no humans were squeamish about sex. I almost can’t imagine how different it would be than the one we do live in.