I used to buy rockets and firecrackers in Saudi Arabia during Ramadan. This, however, beats them all.
When I was ten, I had a firecracker in my right hand and a lighter in the left. I kept on lighting it on and off and bringing it closer to the firecracker.
Of course, soon, the firecracker lit and almost instantaneously went off. The pain registered after a few seconds of shock. Can't believe I was so stupid.