The "it's somebody elses fault" mentality of todays society. Nobody is responsible for anything anymore. If I spill coffee on myself, I sue the coffee maker. If I rear-end somebody, it must have been a) brake failure. b) bad roads. c) person in front stopped too fast.
By the way, your child doesn't have ADD, ADHD, or any other disorder....he is an a-hole. Discipline him or shutup.
Wow, I feel better!