Closest Iv come to getting trapped was with my cx500, I was knelt down putting air in the rear tyre and it was on the side stand,cx500s have notoriously weak side stands and topple over for the fun of it, anyway there I am checking the tyre pressure and suddenly the bike slowly starts leaning further over, like a muppet I dive forward to save it and end up pinned under the engine protecter bars, took a good min or so to wiggle out and a week for the bruise on my back to go . The bike was Undamaged though