Surely you've heard of Cthulhu fhpoopn, which rougly translates to "In his house at R'lyeh, dead Cthulhu waits pooping."
Check out this fantastically detailed Cthulhu tattoo by London Slade of Weirdsville Tattoo Emporium.
Thanks Daniel! Awesome tattoo!
See below to find out what Cthulhu's reading on the toilet:
See also: Cthulhu T-Shirts