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A recently discovered parasitical worm. Closely related to heartworms in dogs, it lives similarly but in the rectum of humans. Where its habit of multiplying until there are so many worms they block passage of stool, a necessary occurance for successful buttworm breeding. As the turds get jammed in the colon, the buttworm releases various rapid-acting enzymes and bacteria that rapidly turn the fudgepack directly into high pressure gas, often in seconds. Individuals caught unaware have been found stunned senseless by the sudden ass-ripping blasts the buttworm uses to spread its airborne larvae. Microscopic, it is breathed in and quickly migrates to the rectum to repeat the cycle anew.
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