I had a bunk-bed as a child, and it was against a window. A friend was over and I was fooling around, climbing down between the top bunk and the window, so that my body was pressed against the glass.
I had almost made it when the window shattered. I was holding onto the bunk bed as it tipped a bit, and my friend got my parents for help. I was seriously losing my grip, and I contemplated just letting go, as it was a short fall out the window anyway. But my father pulled me in just in time, and said to leave it till tomorrow morning to clean up, since it was dark outside.
The next morning, I went outside to check out the damage. There was a large, surgically sharp piece of glass stuck firmly into the ground so perfectly that, if I had fallen, I would have been sliced in half - or at least disemboweled.
Well, that's the closest I've ever come to being killed. Discounting the time I pulled up to the white line at a stopsign (except there was no white line and the line I pulled up to was the center of the road and an 18-wheeler had to slam on its brakes and swerve to avoid destroying me

).
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