Was driving an off-road go-kart, it had some problems, and I was a pretty rough driver... Lets just say that I ended up breaking my arm off completely, just a bit of skin holding it on... was conscious through the entire thing. Various cuts on my body, nerve damage, titanium plate inside of my arm holding it together. As I'm typing this my fingers wont properly move to the correct places.
When I crashed I quickly looked down at my arm as I knew exactly what happened from the feeling... saw it bent backwards and sideways, bone through my jacket. If I wasn't wearing a jacket and gloves during it, my arm and hand would have been completely skinned considering the fact that I was drug 10-15 feet underneath the flipped go-kart...