@Dessert: He was pressured into using his hand to making jerking off motions at my face during lunch time after losing to a round of rock paper scissors back in high school. I pulled out my carpenter knife with the blade out and held it in front of me and told him jokingly that he can go on but at his own risk. He made the motion and promptly sliced himself on the blade and had to be rushed out. I only found out that he had to go and get his finger stitched up until an hour later when he got back from the hospital.