I'm writing a Harry in sixth year fic, and Madam Hooch teaches them one chapter of a sex ed course.
Things I know about her: She's got yellow, hawk-like eyes; short, grey hair; and she teaches Quidditch to first years, and is the referee for Hogwarts matches. She also used to play on Silver Arrow brooms.
In my story, she has to discuss the topic of self stimulation. How would she do it do you imagine? At one point in my story chapter, she decides to move the class from the Great Hall, where all the sex ed classes are taught on weekends, to the Quidditch Pitch.