In Marine Corps basic training, you soon learn that everything recruits use belongs to your drill instructor. For instance, they refer to the stuff in your footlockers as "my trash" and to the racks where you slept as "my racks." One time, when some new recruits were all whispering in the bathroom while making "head calls," the drill instructor overheard them; to their surprise, he suddenly yelled, "Why do I hear voices in my head?"