A verb meaning to sit backwards on a toilet while defecating. The term is a reference to a sitting technique used by A.C. Slater from "Saved by the Bell."
It has been suggested that the act of slatering might come into use when encountering public toilets in Europe, which often feature a shit shelf. Slatering the toilet would provide a more sanitary bathroom experience.
"dude, i totally just slatered that toilet. it was amazing because i could rest my reading material on the top of the tank."