What could possibly go wrong...

Ingredients:
1) boy that knows no fear

2) bike3) ramp
Result:

I received a call from my wife indicating that Brandon had scratched up his face in a bike accident. My wife put Brandon on the phone:

How did the accident happen Brandon? Were you trying to do a jump?
No Dad.
Well, what were you doing?
I rode my bike up a ramp.
What was at the top of the ramp?
Nothing.

Brandon had ridden up the ramp and done a reverse 270 landing on his face and shoulder in a neighbor's driveway.