You take a MA class to have a good time, get in shape etc. Not get scowled at for touching a wall. Thats not against the law. A lot of people here need to focus more on having a good time with your hobby, instead of trying to be serious all the time. Most of us don't live in Chinese buddhist temples. You shouldn't let people push you around for no reason, you will get walked on your whole life. I wouldn't choose to learn humility from a little girl who believes she has power over you. Waiting for her to slip up may sound immature, but you got to make light of an aggrivating situation to continue to have a good time. She will either think its funny and see how dumb it sounds, or get mad and still see how dumb it sounds. Either way, she probably won't try to mess with you anymore.