[KC Burke]

While it only occurs some years apart, the ol' slame-the-head-into the ceiling beam while going up the basement stairs was always worse than the under-hung door closer for me. Something about the full leg propulsion while thrusting oneself upstairs gave it a crippling level of impact.

[7thson]

On ships, I had to learn to walk very carefully in the middle of the passageway. Any slight deviation to the left or right - port or starboard - and I alway hit or nicked my head on something hanging from the overhead.