I was talking to a fellow student the other day and he recalled an incident at his old gym where, as a white belt he asked a black belt to roll during the grappling portion of the class. The black belt proceeded put a Grade-A jitsu beat down on the poor fella, and directly afterwards turned to my friend and said. "Never ask a black belt to roll..." That kinda blew my mind. I understand if there was no class or he wasn't participating and you just barged in and threw down a gracie challenge on him, but this particular black belt was in class, as a student. Here at ATOS I have asked Andre a bunch of times during class to train, along with any other that happens to be there. My question is, how do you feel about asking a BB to roll under friendly circumstances? Is it down right disrespectful or a necessary part of being a black belt to begin with?