noun. That's sheer lunacy!
Related terms: batshit loony, batshit whacko, batshit insane, batshit nutty, batshit nutso, super-batshit-insane, completely-fucking-batshit-insane, batshit-fucking-crazy, batshit-sounding, non-batshit, pre-batshit, anti-batshit, batshit loonball, holy batshit, batshittery, batcrap, batpoop.
Real citation: "But Galvy wins by sure badassitude. Or is it batcrapitude..."
(Malancthon, Feb. 15, 2005, http://forums.transfandom.com/invboard/index.php?showtopic=25479&st=20)
Made-up citation: "By the end of Lost, if every character is chock full o' bugfuck batcrapitude, I'll be a very happy boy."