Police say a prank a decade ago led to an act of arson Tuesday in Washington state. KIMA reports Joel Cruz was at his parents house alone when police say he put a pot of vegetable oil on the stove, turned up the burner, and left. The resulting fire severely damaged the home. Police say Cruz told them he did it because he was mad thinking about his brother farting in his face a decade earlier. He also reportedly told police he heard voices in his head. Police gave Cruz a mental evaluation and tried to admit him to a state hospital but were unable to do so because he was determined to be a danger to himself and others. (More fart stories.)