How I learned
When I was a kid, all the older females in my family were addicted to Dynasty. I had not yet learned about the birds and the bees. With nothing better to do, I watched Dynasty along with them.
There was some plotline about Crystal getting pregnant and some other talk of a "pill." So I proudly exclaimed to my family, "I know how Crystal got pregnant. She took a pill!"
I was then given my sister's biology textbook, and told to read the pertinent sections. Only many years later did I get to practice what I read.