Wow.... just wow.....
I did have a pyro friend in High School that would spray hair spray on his hand and light it. Basically, it's physics that the alcohol in the hair spray burns off before the heat penetrates the skin. He was also vary quick to put it out and did not douse his underwear with it prior to lighting it. You can also run your finger through the middle part of a lit candle because the heat is located at the tip and base. There's a lot you can do with fire that appears REALLY dangerous (bordering stupid) but still live through it. One is flicking lit matches into a pool of gasoline. I'm not for sure how that one works, but it has something to do with the vapor igniting, but the liquid puts out the fire. DO NOT TRY THIS AT HOME. Try it at someone else's home not anywhere near YOUR home.