Urban: flamethrower
FromUrbanDictionary.com:

1:a type of fart that when released heats your pants to such a high tempurature you must sit up or move to the side at a 45 degree angle to provide a means of cooling. the fart is usauly so hot that the victim can detect the sudden tempurature change especial if they breath it in, in some cases it remains superheated for 30 seconds or more. any fart like this is always silent and almost 100% garenteed to smell so bad it will clear out a room. first timers are always caught red handed because they cannot belive how smelly it is so they laugh or get overexcited. if it happens remain calm and try not to laugh, if there is people in the room it is best to leave no mater how much you want to see there reactions fast and un noticable because in seconds they will all smell it seamingly at the same time and rapidly leave gagging or cursing. the victim will not laugh but get mad because the fart is so unfathomably smelly and disgusting. if your caught they will ridicule you or try to explain why that was rude. the proper place to discharge this fart is outside or in an extreamly crowded room because nobody will ever know who did it and they wil be forced to smell it because the doors can only handle so much people trying to escape the rancid odor. this fart is the main component of a real dutch oven.