Germanic, das fartzenheimer. Refers to an ancient Nordic practice in which warriors, on the eve of battle, would engage in a festival of beer, roasted meat, bowel manipulation, and vigorous anal sex to produce an astounding amount of pent up anal gasses (often combined with farticles) that would be hurled at the enemy during close combat. The Nordic warriors were usually so hung over that the noxious fumes had little effect on them. But, the enemy commonly succumbed to the fetid cloud.
After the party, Elwood woke up with a piercing headache in a strange room with his butt bleeding and ripped one so loud it could only be called a farthammer.