@jack36767 came here to relate a similar story.
I have to say this is legitimately the first time I've been pissed off at a white belt. There's a new guy, 25ish. Very athletic, played baseball or soccer at a D1 school, forgot which sport.
The first time I rolled with him it was his third class. I let him pass into side control and try to work the choke we were drilling in class that day. Of course I escape. Afterwards he starts going on about how he almost had me. I told him man I let you get that position. He insists he almost had me. I let it go. Whatever.
A couple of days ago. Open mat. I'm playing open guard. I let him take side control and then mount me. Escape, reverse, arm bar. Reset. I catch a triangle. He's getting very frustrated. "Dammit, I fucked up." I say, "Hey, don't worry about it. I screw up 50 times a day. We're not in the finals at the worlds here, we're just playing around." Then I catch him in the exact same triangle, exact same setup. I guess this really pissed him off. We reset, I end up in side control pretty quickly. This is where it goes bad.
I'm inside control and he starts digging his far side thumb into my throat. Hard. From side control obviously I can do the same only much worse. But I just say, "Hey dude, get your thumb out of my throat." He says, "I'm just grabbing your fucking collar." I just get up and walk back to the wall and sit my happy ass down. There's still 3 or 4 minutes left on the clock.
So now I'm wondering what I should do next. Sit him down and tell him basic Jiu-Jitsu courtesy? Get the word around so everyone knows to smash him? I'm kind of thinking next roll with him to just make it suck for 8 minutes. Fist to throat from closed guard, knee on belly, cross face pressure, elbow grinds, chokes on his jaw. Good old Ralph Gracie style.
I helped to open this academy and am a charter member. Never dealt with this type of asshole before.
Thoughts and suggestions?