2013 Darwin Awards #7:

When a man attempted to siphon gasoline from a motor home parked on a Seattle street by sucking on a hose, he got much more than he bargained for. Police arrived at the scene to find a very sick man curled up next to a motor home near spilled sewage. A police spokesman said that the man admitted to trying to steal gasoline, but he plugged his siphon hose into the motor home's sewage tank by mistake. The owner of the vehicle declined to press charges saying that it was the best laugh he'd ever had and the perp had been punished enough.