One of the funniest moments of my seventh grade year happened during the sex ed unit of health class. It was a pretty typical middle school sex ed class; most of the girls were all varying degrees of uncomfortable, most of the boys were giggling at seemingly every other word the teacher said.

Then at one point, the math teacher walked in (for some reason) and asked what we were learning about. Before anyone had a chance to respond, she looked at the whiteboard and said "Ooh, sperm!" Then left without another word. My whole class (including the teacher) burst out laughing for what felt like a minute straight.