Not my info but this year a classmate confided in me the following:
"it took an embarrassingly long time to realize that men have multiple holes on their penis".
I thought she was joking but she was dead serious, (she was from a very conservative family to put it mildly and had been withheld from sex-ed their entire life). For some reason they insisted arguing about it with me and the other guy present.
I was 22 and she was 21.
I think the idea was two holes right near each other on the head, one for piss and one for cum lol