Dungeon Enema
Some days, when you’re hanging in a dungeon over sharp spikes with a massive iron weight on your back, while a crazed manic jester threatens to give you an enema with a squeeze-clyster the size of a watermelon, it can be really hard to maintain your normal cheerful and positive outlook:
From Usenet.
Elsewhere on Bondage Blog:
that is from kekko kamen (if memory serves the jester is called “satan toecheese” in the English version)
Source is correct, Kekko Kamen (literally, Naked Mask), however I believe the correct title for the villain is The Big Toenail of Satan.