I was once very stupid and did not keep my head up this summer.
I, as I was riding along, was looking to my left and not ahead. I failed to see the parked van... When I eventually did look up, there was a brief moment of "Ooooooh sh*t!" Before I jammed on the brakes, and came to a sliding, tyre-tread leaving, halt. Inches from the rear of the van - which just so happened to have a steel bar across the back and a closed door..