The first time I went to Pompeii in my late adolescence was in the mid-60s. I was touring that day with a couple of other “girls.” The docents would not let us into several of the rooms with mosaics because they were “improper” for young ladies back in the day.
I also remember being in an Italian museum on that trip, possibly the Naples Museum, where a museum guard demonstrated why some of the statues of gladiators, centaurs and fauns had a hole in the bronze where the male pee-pee should be. He had detachable bronze “parts” in his desk drawer that could be hooked (erectly) into those openings. He got a big kick out of the thought of embarrassing us, but we were history of art students and not so easily shocked.
Hah! So THAT's where King Missile got the idea!
The really scatty stuff is (or at least used to be) in a private area in the Naples museum. Michael Grant (and probably others) did a book about those exhibits.