Originated by observing the way bats defecate. Bats hang upside-down and poo upside-down. If people were to hang upside-down and poo it would go all over their face therefore only a crazy person would shit like a bat making them batshit crazy.
by bs425 December 25, 2014

Sarah Palin, just delivered a speech supporting Donald Trump that made absolutely no sense, that bitch is batshit crazy!
by Redbitchbetty May 2, 2016

A crazy person.
Bryndon Fisher expects to received $125 a share for his fannie mae & freddie mac common shares from the US government. This is batshit crazy.
by Fanniegate April 21, 2022

The adjective 'batshit' (almost invariably premodifying the noun 'crazy') derives from the fact that the guano of certain bat species, when smoked, vaporises as a potently psychotropic narcotic. The word entered the popular consciousness after one of several dozen guano collectors dropped his torch, igniting the batshit (which, as a fertiliser, is flammable) swathing every surrounding surface. The fire spread rapidly, but all the workers managed to flee in time - having, however, inhaled a considerable quantity of the smoke. The resulting deranged rampage made the international news, and "bat-shit crazy" was used in the New York Times headline. This coinage by the relevant subeditor seeded the general currency of the term, consolidated by a brief outbreak of the use of guano as a recreational drug, before even the most hardcore druggies concluded that it was just too batshit crazy.
by maxcct April 26, 2011

Being batshit crazy is when you do something stupid like say a racial slur on twitch catholic streams
Synonyms: Dumbass, SPED, Doofus, Idiot, Meowbahh, Dream Stan, Dumb
Synonyms: Dumbass, SPED, Doofus, Idiot, Meowbahh, Dream Stan, Dumb
by GoroMK1 February 25, 2023

by greekmadlad March 30, 2024

A way to describe someone of any gender who is crazy enough for observers to equate their speech or behavior to guano and its properties. (Runny, stinky, absolutely chaotically displayed, ect.)
by Rain Kate August 9, 2021
