Lu-na-cy (ln-s) n. pl. lu-na-cies   1. foolish or senseless behaviour - gay or light-hearted activity for diversion or amusement   2.Intermittent mental derangement associated with the changing phases of the moon.  Related Words: Foolishness, absurdity, tomfoolery, indulgence, buffoonery, frivolity, frolic, romp, caper, folly, senselessness, mania.
"...taking over the world one downstairs loo at a time..."