Slang term for the underground practice of inhaling vapor from human feces, primarily for the narcotic effect of its methanethiol gas combined with the effect of
hyperventilation. The term itself comes from "turd" and "huffing" due to the rapid inhalation and exhalation from paper or plastic bags containing the fecal matter. As with glue sniffing or
hallucinogenic mushroom consumption,very unpleasant symptoms are
experienced prior to the high, slowing the spread of the behavior. While its high is considered uniquely euphoric, tuffing is relatively brief and those who indulge in the practice risk severe infection, irritation of eyes and mucous membranes, convulsions or in extreme cases, coma or death.