Erroneous statement indicating a misconception borne of ignorance or naivety. Synonymous with "fallacy" (though must be stated) and derived in part from the adjective "fecal." In the cherished tradition of equating unlikely notions with fecal matter and/or the act of defecation.
"Fecalities we're abundant in today's session of parliament, the most heinous fecality coming from the Prime Minister."