Ok, Who unleashed the Gas Fairy!!!

I know this is probably rednecked, and uncouthed, but who unleashed the Gas Fairy. The green haze coming from my backside will kill infants and small animals. It has just been officially declared a bio-hazard. The office of homeland security, is stalking me as we speak. Who did it? Who unleashed the Gas fairy? I want to know. It is not funny (giggle, snort) not funny at all (shaking uncontrolled glee)