short for "i want to be an airborne ranger!", generally done while banging one's head into some solid, hard object. This is generally done when frustrated or just trying to avoid a female superior. Based on the ability of airborne rangers to jump out of planes with or without parachutes on to get away.
"Johnson, get those reports in by 5."
"Yes maim." (banging of head, I WANNA BE AN AIRBORNE RANGER!)