For crying out loud LOL. Here. A quote from the Creation Worldview Ministry, of all places:
[center]"How could an animal intentionally ignite methane gas that it breathed out of its mouth or nostrils to produce a usable flame?

Of course, there might have been a mechanical mechanism , such as snapping or clicking the teeth together quickly to produce a spark similar to a flintlock rifle. Or, perhaps there was an electrical mechanism . A series of electrical organs lining the throat similar to those of electric eels or electric fish could have been used to ignite the gas. Electric eels produce voltages up to 600 volts on demand. More likely, however, there was a chemical mechanism involved. After all, it is the chemical mechanism of bioluminescence that makes fireflies light up the night sky.

Most animals (and people for that matter) have some arsenic and phosphorous in their body systems. Under the same conditions that produce methane gas from vegetable materials in the stomach of a cow, arsenic forms arsene gas (AsH 3 ) and phosphorous forms diphosphane gas (P 2 H 4 ). When arsene gas or diphosphane gas comes into contact with oxygen they will spontaneously ignite. This combustive action is what causes marsh gas (which is really just methane gas formed from the decay of vegetable materials in a swampy environment) to ignite.

Aquatic reptiles and land dwelling dinosaurs could have produced a flame from their mouths or nostrils using such a chemical ignition system. The purpose of such a system would most likely have been defensive in nature; although we cannot rule out other uses, such as mating or communication. With a little practice, proper muscle control and either electrical or chemical secreting organs lining the inside of its bony crest a Parasaurolophus might have been able to exercise just such a flame thrower on demand." [/center]

So....................who's got the next post?? ;)