A childhood belief about swearing

When I was in the 2nd grade I was in religious ed. with my mum teaching, and someone had written "F--- God" on the board, and it looked like my mother's handwriting. So I said "What's ---- mean?" She got a really, really angry look and told me to ask her after class. I still thought it was a religious word and was quite perplexed. In the car on the way home she told me it meant "sex in an angry way." After seeing my first rated R movie, I didn't understand all the talk about "'sex in an angry way' you" but I got the main idea after hearing some playground talk.

A year later, I stuck up my pinkie and some girl told me that it was a dirty gesture because she thought it was my middle finger and refused to be my friend. For years after that I thought sticking just your pinkie up was really, really bad.