I've always thought, somewhat as a joke, that I would kill myself by first finding a tall enough bridge over top of a road or a sidewalk or some other sort of area where I wouldn't fall into water, to that bridge I would attach a rung of steel wire, which I would then tie tightly around my throat, after which I would glue my hands to the top of my head and jump off the bridge. The tension and strength of the steel wire if I reached a high enough speed while falling would cut my head clean off but when I landed it would look like as if I pulled my head off of my own body due to my hands still being super-glued to my head. It's really just a thought experiment, because if I really did it it would most likely be with an exit-bag, but it would certainly make the news.