Nefarious mindfuck created by Frievil mastermind Slimeslurp during Spoofs season 4.
The challenge in question presented spoofsters with a list of images they were required to find through using the Google image engine. One image in the list was never found.
After years of mystery, the image has taken on a cult-like following. It has been speculated that the picture actually depicts members of Slimeslurp's clogging club.