I watched a guy do a header out of a 30-Series Lear onto the ramp in Washington one day, with his pants around his ankles. The Lear had one of those upper/lower clam shell doors with the biffy directly opposite the door. The bottom half of the door obviously hadn't been secured properly and fell open at the most inopportune minute. The guy made a lunge after the door but it was too late, the door fell open and he followed it headfirst out onto the ramp.