go apeshit

Verb

go apeshit (third-person singular simple present goes apeshit, present participle going apeshit, simple past went apeshit, past participle gone apeshit)

1. (intransitive, slang, vulgar) To behave in an extreme manner; to act without restraint, especially by becoming explosively angry.
   • Dexter's vocals are competent enough: his timbre is thin and eternally teenaged, but he can go apeshit on the hiccupy histrionics like no one's business.1999 August 26, Buddy Seigal, “Even Old Englishmen Still Get Wood”, in OC Weekly, retrieved 16 Jun 2009
   • Naturally, the touchy airline crew went apeshit and when the plane landed, the LAPD was waiting for Mr. Zizza.2003 May 1, Ann Romano, “One Day at a Time: The Week in Review”, in The Portland Mercury, retrieved 16 Jun 2009

   Synonyms:

   blow one's top, go ape, go ballistic, go bitchcakes, go postal, go crazy, go nuts, go bananas, flip out, hit the roof