Guess I'll tell my story...
19 years old, new CR125 Honda (1976 motocross model), no helment, t-shirt, jeans, tennis shoes. Add to that 6 plus beers and a few other illegal substances.
Set down a third gear wheelie on the wrong side of the road leading into a curve. Head-on into a 1975 pinto station wagon. Bike went under the front of the car, bike tank (aluminum on that model) ruptured, bike caught fire and burned along with the car. The people in the car were OK.
I had some stiches in my knee, and some serious road rash. (basicly unhurt) Apparently I stood up and went over the top of the car.
I figued that was my lucky break. I haven't operated any motor vehicle since if drinking. I am 46 now.