Went end over end (sideways) down a 40ft drop-off into about 1ft of water on the C&O canal. Not a single scratch but I was unable to even stand up due to the adrenalin rush. Friends had to throw down a snickers bar and some water for me so I could stand up and climb back up further downstream. Aside from that, just a lot of scraped up knees jumping my 3-speed on a gravel driveway as a kid.

Other: Brain tumor, still have to take meds due to pituitary issues.