A level of insanity that the word alone cannot justify. Usable as a prefix ("Batshit insane") or on its own.

Popularised by Something Awful, before it was rubbish.
"That Gay Farmers For Jesus site is completely batshit."
by Foul Egg January 20, 2003
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Off the deep end, crazy, insane. But worse.

See Gary Busey.
My mom has gone totally batshit; she tried to microwave our cat!
by HolyHeartFailure September 05, 2005
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insane, wildly irrational (see also go batshit}, and batshit crazy)
The kid was batshit. No wonder nobody wants to be his friend.
by Light Joker December 08, 2004
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adj/adv. pejorative used to describe people or events that lack any sense of rationality or sanity.

N) Glen Beck
And what the fuck are you doing on television anyhow? Do you know I get calls every day from home thinking you went batshit (from the movie Casino).

Yeah, I watched the show today. Batshit started crying again.
by editor, fucked up dictionary November 04, 2009
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To describe something/someone that is beyond crazy and insane.
In particular, insanity to the degree of being extreme.
Also is a way to describe someone who lacks any sense or rationality.
Also describes a state of being crazy.
Synonyms include: irrational, insane, crazy, extreme, delusional, lunatic, etc.
Wow, that bitch who picked a fight with me yesterday was batshit!
by whats_yo_name_pussycat March 16, 2018
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Like apeshit, but exclusively applied to Christian Bale
Did you hear the tape of him going batshit on the set?
by someoneelse123 February 04, 2009
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