noun. The Necronomicon, that classic source of marauding, unholy evil and spring fashion tips.
Real citation: "How would you respond if someone made you a similar offer? Would you be willing to sincerely invite Allah to have coffee with you while you read the Koran? Or the Mormon god while you read the book of Mormon? Or Satan while you read the necro-whatsit?"
(Jan 21, 2007, Freethought and Rationalism Discussion Board, http://www.freeratio.org/showthread.php?t=193234&page=4)
Made-up citation: "Honey, could you hand me my necro-whatsit? I think I left it in the baby's crib. Um, he's not old enough to read it aloud in a hushed voice, is he? NOOOOOOOOOOO! This was a bad week to stop hoarding holy water and suitcase nukes."