I have a friend that I've known over 45 years that has a daughter that I knew as a small child became interested in the South American Martial Arts. I have seen her stand on one leg + gracefully bring the other foot to one's face; slowly,+ hold the stance. She told me that in S.A. there is a method of meetings between different factions. The current custom was that they each brought their "boom boxes", turned on the music, took off their shoes + socks, put razor blades between their toes + began the sparring detail. I have never seen it but am relating it from a girl that I knew when she was a tiny thing. would'nt surprise mr though.