A childhood belief about rude bits

In my young, impressionable years, my sadistic older sister informed me that when you get to 8th grade you have sex education, and the teacher would randomly call on a boy and a girl to come to the front of the class to drop their pants for illustrative purposes. The rest of the class would gather around and stare while the teacher would point out various anatomical features. I lived in fear of being the unlucky victim of this mortifying exercise.

Fortunately, when I finally reached 8th grade, the teacher picked someone else :)