noun. Nutso-cuckoo-ism. Or bugfuck-loonball-ism. Little of both, really.
Related terms: batshit-crazyism.
Real citation: “6 More Months Of Batshitism”
(July 20, 2006, http://www.thosefascists.com/cheese/003457.php)
Made-up citation: "My family has a history of poor judgment, flat feet, and rabid batshitism. Our end of the gene pool is a kiddie pool filled with dog pee and elephant snot."