Originally Posted by WarChild

Man, I hate assholes that use canopener to bust open a newbie's guard. It's such a rookie maneuver and not to mention useless against someone with a thick enough neck. You won't see any can openers when black belts fights.

I bet it was a guillotine that did it to him. The first few times you get caught in one, almost everyone wiggles around and tightens it up without knowing it. I've left a nice ring of bruises from Mata Leao though, on a GFYer actually.