Yes, finally I'm being literal on my post titles... I'm writing this as I observe my neighbor (but not my neighbor for much longer) try to put out fire on a cardboard box. He put the box outside his apartment on the walkway and was running in and out of his apartment with a cup of water and dumping it on the fire. Then running back in...
It's not wrong to use water to put out fire on paper. There are two things that are wrong with it. First: why is there a box on fire? Second: a cup of water? Can't you just use a pan, or, if you want to bed fancy, a bucket?
Sure, there right now there is no fire any more. He is still going in and out of his apartment to dump water on the walkway where the box was burning, trying to cover what happened.
What would I do? Usually the easiest way that I know to put out fire is not really using water (especially on small fires), but by starving the fire of air. Get another piece of cardboard and just use it to remove the air from the place on fire. It's easy, safe (again, only for small fires) and doesn't really require you to turn your back to the fire to get more water.
So, am I angry? Disappointed? Afraid that one day this neighbor might cause a fire in the whole apartment complex? Not at all... It was just funny! I felt like watching a badly produced comedy. It was missing the soundtrack in the background. :-)