one who cannot poop in a toilet in a reasonable manner may be said to have a
prehensile rectum. A
prehensile appendage is one that is capable of grasping or conscious manipulation. One with a
Prehensile rectum is purposefully able to miss a large target such as a toilet.
the term originates from a post by Billy
Rubin on the StraightDope forums in 2001.
Look, F***
wicket,I know you got your problems. Do you have a prehensile rectum that you can extend on a stalk
like a snail's eye and aim? How in the name of all that is
unholy do you get poop everywhere?