adj. Cuckoo for crack and other fine breakfasts.
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, batshittery, holy batshit, batcrap, batpoop.
Real citation: "I still can't get over her getting in touch with a librarian in Jordan to find out if I really read a book there. How batshit deranged can you get without realizing you're out of your fucking mind? She continues to demonstrate that you can be truly out of your mind and never know it."
(evariste, Feb. 11, 2006, http://discardedlies.com/entry/?11946_)
Made-up citation: "Too much work plus unending allergies equals a batshit-deranged me, who might just start living up to my family's fine tradition of postal workers."