When a person performs his/her job or task with such a high level of motivation it makes them appear retarded. Motivated-Retarded.
Scene: One army platoon has guard shift.
Larry: Hey how are you doing? Are you ok? Do you want to go get some coffee? Do you need anything? Are you cold? Have you seen anything?
Nick: Larry calm down, I'm fine. I don't need anything. Just go back to your post and calm down!
Larry: Ok I was just checking to see if you were alright. Well I'm going to go, I've got 5 other posts to check.
Nick: Ok Larry, do whatever. Just don't have a heart attack. (Larry Leaves) Man that guy is motarded. I swear he takes this job far too serious. He's going to have a heart attack one of these days.