I think that's pretty universal. I'm a woman, but even our lady gym teachers/coaches were like that. When my kids were little, I was shocked when my babysitter told me they had co-ed gym. Even more sorry those boys had a female teacher that I had. Poor boys. (Verbal humiliation)
That is pretty terrible...the poor boys.
This character is actually a combination of two of my Middle School Gym coaches: he bears a physical resemblance to my 6th grade coach. But my 8th grade coach...she was about four feet tall, and one of the meanest, psychotic people I've ever met. And she ESPECIALLY had it out for me.
There were times I got detention from her and I didn't even know what I had done wrong. She would just grab me and give it. And I would ask over and over why I had detention, and would never get a clear answer.