Only one guy ever tried it with me when I was 14 and he was 17.We fought it out in front of our friends inside the school gym,behind some of the seats during a basketball game.I totally handed him his ass,made him pass out using a figure 4 leglock round his neck,then when he came round I used a scissors hold from behind,squeezing harder and harder until he passed out right as 2 of his ribs broke on both sides.Everyone heard 4 rapid loud cracks.Then I held on the squeeze until he was deeply unconscious and casually kicked him away from me.Off to ER he went.He was still unconscious when the paramedics arrived to take him.