The weirdoes at Somethingawful have related stories of their (or their friends') most embarrassing injuries. I think my fave is:

"One of my friends had been visiting family in Australia for a few weeks and was packing to come home a few hours before the flight. Unable to find her passport, she picked up a wooden ruler and proceeded to dance around the room waving it like a wand and shouting 'accio passport!' until she stabbed herself in the eye, had to go to the hospital and missed her flight home."