Gas doesn't burn wood if you put it on the wood, you need to put it UNDER the wood. In my junior high school science class, some kids would douse their hand in alcohol, and light it. It doesn't hurt, because the evaporation of the alcohol cools your hand off as much as the flames heat it up*. Gas on wood is similar. Plus, green wood also won't burn very readily, the water content keeps it from burning.


*Note: You have to make sure you put it out before the alcohol is all gone. Also, don't do it if you have hair on your arms, otherwise that will change!