My nephew Tim is 25 years old. Tim has autism. Autism is a mental disorder that makes his brain work at a slower pass then you or l . How ever there are things that he can do better than most people, just not a lot. Tim is a very big person. I don't know how tall at metric. So I guess he is 3 meters or so tall. 6' 3" ( 6 feet 3 inches ) tall. And he weighs 240 pounds or about 75 kilogram's. He has the mind of a 7 year old. Tim talks to himself all the time. Most people including his own parents could not live with him, because of him talking with himself alone. And he will start up a conversation with people he doesn't even kn