The only things I could see causing this are severe character flaws, a complete lack of proper training, completely delusional self perception, or all of the above. The really sad part is these guys obviously don't have a clue. Either someone convinced them that they were that good or they managed to convince themselves. Unfortunately it sounds like they all might have such high opinions of their skills that the embarrassment of how they are really perceived may be more than they can handle. I hope they get proper training before they get hurt. (One of these guys is bound to end up pulling this in the wrong school and will end up in the darwin awards.) I have pride in the skills that I have learned and worked very hard to develop but there are quite a few people out there that have a lifetime's worth of practice on me in several styles or a natural affinity for them that I may not be able to match. It's not like they have a sign hanging around their neck with a picture of their foot and my a$$. To assume that I know more than everyone in a school without taking any time to get to know them, their style, or their school practices is just nutty. I will always be a student and strive to be the best student I can be regardless of whether someone tells me I am an instructor or g-master or tutubagonnada, god of the cash for sash clan. If someone wishes to learn something from me and I know they will benefit from it and use it well I am honored to show them what I know as long as I have permission from my teacher to do so. The key is that the person is also asking. I respect all of you as instructors for the sacrifices you have made and the dedication to whatever style you have a passion for. I had the opportunity to be a dedicated instructor for my school and had to back out because the situation was not right. When I do find the right place and time I hope I can carry myself with as much patience as you do.