there’s this guy in my school and he’s in 12th grade like me. He has a disability though. He’s very very small; about the size of a 3 or 4 year old. He appears to have no muscle tissue at all because his arms and legs are extremely skinny and look like it’s only skin covering bone. He is bound to his electric wheelchair the whole time and his head and body always seem to sag to the side. He’s not mentally challenged, however, since he can carry perfectly normal conversations. The only reason I don’t feel bad about asking this is because he’s kind of an asshole to me and everyone else in school. He flicked off our principal two years ago, is always running people over with his wheelchair (like me, today) and insults people at the drop of a hat. What kind of disease does he have?