In 4th grade, I was playing tag on the playground, and I was running down this staircase and jumped onto one of those double-sided slides, well unbenounced to me I landed right on the divider and rolled down it, and bashed my jaw against this 90° angle on the edge of it, which knocked out my two front teeth (which were permanent), and the impact of the hit was powerful enough that I got brain damage from it. When I'm typing something I'm ok, but when I speak in a conversation I tend to struggle hard to think of words and I frequently mix up the wording of my sentences, example: "Hey, I just game this new got, you should check it out!" And right after that, I acquired a tick of sorts where I would literally have this uncontrollable bite. I couldn't do anything about it; my brain just thought it was right. After that, people started calling me names like "Chomper," and "Alligator," and it really bothered me. Not to mention the only people doing such were the overprivaliged asshats of the school, and I had a great group of friends who had my back. Its 7th grade now, and I haven't stopped yet, so my dad tried signing me up for therapy. After about 4 months of that it got noticably better, and I stopped biting, but people still teased me. Luckily enough I moved and put that behind me. TLDR: I ended up with 2 fake teeth, a root canal, stress therapy, and I can barely say a sentence correctly so I have to speak really slowly and think about what I'm saying.