In the early 80's I asked my sensei if he ever got a beating in a sparring match. he said once,  I asked with who, he said with a girl in okinawa. I said ,what, with a girl? He said yes, I asked how did she do it? He said my father alway said, when I was growing up, never to hit girls, I didn't know how much that stuck in my head, so when I got called in to spar with this girl she had hug boobs and I just couldn't hit her there and I couldn't hit her in the face, so she kick my ass!
  about six months later, my teacher said to the school that Cathy Wheeler was come to visit the school. and then he pulled me aside and said that she would need some one to spar with, and since I was the cheif instructor and his main (*&^% kicker, I would have to do it. I remember what he said about the one time he got beat. So I said to him, ok but I will punch her tits out her back! he just looked at me like I was a little nuts!