noun. A crapfestacular disaster of poopitudinous proportions.
Real citation: “Cannibal Crapocaust…Err, Holocaust”
(June 25, 2006, http://www.samwilkinson.org/2006/06/25/cannibal-crapocausterr-holocaust/)
Made-up citation: "When you leave the bathroom, all that remains is a crapocaust fit for neither man nor beast nor bot. When I leave the john? All is minty and springtime and puppies and songs by Blondie and Elastica, along with heavenly apparitions."