82nd Airborne paratrooper humor in reference to that moment when one has a turd which is insisting on poking it's head out the door. Of course this usually only happens when one has a very had piece of shit as loose stools apparently exit the door before the green light comes on and/or exit the door is a mass tactical exit anyway.
Sgt Ramirez running down the hall: "Get the hell out of way Private Jones, I have a trooper in the door and he's ready to jump"
by WunHungLo August 6, 2011