(vulgar, literally) Fecal matter produced by bats. / (slang, vulgar) Nonsense, horseshit; especially when said by or attributed to someone irrational.

(slang, vulgar) Extremely irrational or unreasonable, insane, crazy.

(slang) Used as an intensifier, particularly for insane or synonyms.

(slang, nonstandard) The state or condition of being batshit; craziness, lunacy.

Third-person singular simple present indicative form of go batshit

past participle of go batshit

present participle of go batshit

simple past tense of go batshit

(idiomatic, slang) To become completely irrational; to react in an irrationally extreme manner.

(slang, vulgar) craziness; wackiness