I chest-butted a jet-ski on Friday during my friend's bachelor party. With him on it, of course. I had about half a second to turn around and catch it straight in the sternum. Spun a hundred-and-eighty, fell to my hands and knees, stood up, answered two questions with headshakes ("can you breathe?" was the second one--horizontal shakes of the head), and by that time my brain was out of oxygen, so I spent a short time in dreamland while they walked me out of the water. My eyes rolled, I drooled seawater, and apparently made the oddest guttural sound during this time, while his brother thumped me in the chest and yelled at me to breathe. Then, in the words of the best man, I just "woke up and started walking again" when we hit the shore. Fun. :) No broken bones, no internal bleeding, no whiplash.
(Not to demean your experience at all, btw, it was just a good segue into my story. Okay, now, everyone pay attention to ME. :D Hope you're all as okay as I am.)
Oh, and this was two hours into the trip. The first hour ended up with two guys going surfing above a shipwreck--one got slammed into it and cut a six-inch gash into the top of his foot. The Red Cross charged him 25 bucks to stitch it up inside and out.
Whee. :) Good times.