Wiktionary
a. (context slang English) Too irrational to be dealt with sanely. adv. (context slang English) {{non-gloss definition|Used as an intensifier, particularly for (term: insane) or synonyms.}} n. fecal matter produced by bats
Usage examples of "batshit".
At this stage he and the other Ennet residents who were still there and starting to snap to the fact that AA might work began to sit around together late at night going batshit together because it seemed to be impossible to figure out just how AA worked.
He sensed the imminence of a batshit math-rap, bound to make him feel dumb.
Kellerman said, “I heard Castleberry heard about your promotion and went batshit.
For whatever reasons - moral, ethical, or just to keep from going batshit with the noise, I keep them up.
Bruce Dern going batshit on a Harley and Vincent Price going batshit in a haunted castle overlooking a restless ocean: who could ask for more?
He's just vetoed the B-1B [bomber] again and the place is going batshit.
You probably got six wiseguys in this place, every one of them with about four guns, and the two of you are going batshit over a kid in a crapper.
He went batshit at the airport in Yap after he couldn't get anyone to evacuate a sick kid off the island.
Reaganesque in its cloying nostalgia - with the metaphorical punch of Ross Perot before he went batshit.