In this video, Mauricio teaches the arm wrap choke. The arm wrap position is a great way to control your opponent from the closed guard and the choke is very powerful if applied correctly.
Is that guy actually being choked? He taps like three seconds after he applies the technique. I feel like it's a pity tap because they're in front of people..
I was thinking the same thing but I was thinking it way before the tap. That is going to be a REALLY hard choke to put on someone who is resisting. That is what I think anyway.