Oh no, I am not nervous of asking him, I just would not like to step outside of the bounds of what is acceptable. I think I mentioned before that my instructor is a very relaxed and soft spoken man (yet stern when need be), and he has a fantastic way with the smaller kids in class. He is actually in his mid fifties, and he never got into TKD until he turned 40 (so he gives me some hope!LOL). He has never once given me the impression that I shouldn't ask him something. From everyones answers it sounds like the main thing to apply is some commen respect and common sence.