The same philosophers who cite the Babel Fish as conclusive proof of the nonexistence of God, often present the unfortunately initialed STD as proof that Satan does exist; however, even a potato with a charge running through it can see that this undermines their initial argument.
These small mammals are indigenous to the Hastromil system, and are relentlessly exploited due to the fact that every single part of their biology is useful (their tears can replace blood in transfusions, their hides can be used to make floats and boots, their hinged tongues serve an unknown purpose. Even their brainwaves can be harnessed to an aerial, boosting signal reception if you live in a hole).
They have only appeared in Eoin Colfer's book And Another Thing....
- In the annals of British comedy, a similar concept was explored in "the Wompom" by Flanders and Swann.