Brain Damage?

I have always wondered about percussionists. They seem to be a little less interested in listening and and little more interested in hitting things! Sometimes, when I am in front of one of my bands, I can actually watch what goes on in the back of my classroom. Much of the time, even if they are quiet, there is very little listening going on! Today in 6th grade band, I was showing the percussionists their newest rudiment they need to know. I noticed some of them were really struggling with their left hands. I asked, "How many of you are right-handed?" One student acted shocked that I would ask such a question. I asked him what was wrong. He said, "Did you just ask us how many of us were brain damaged?" I think we need to do a listening exercise next time!!