@Caroline,
This one is too.
Swearing? I didn't know what **** meant until I read about it in books in my late teens, or even later. Nobody swore around us, this in the fifties, early sixties.
My first memory was hearing about RF at my university. I asked, and was told it meant rat function. Then someone told me ratfuck. But, that didn't help.
Sigh. I learned by reading and then by life.
I've spent stupid hours getting over that sort of anathema.
Be careful what you wish for.