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1. rude slang To be or become wildly or uncontrollably angry. My parents went totally apeshit when they found out I'd wrecked the car! Now, don't go apeshit or anything, but I've decided to move to Canada.
2. rude slang To be or become extremely excited or enthusiastic (about something). I've never understood that pop star's popularity, but kids just go apeshit over her music.
See also: apeshit
1. mod. excited; freaked out. (see also go apeshit over someone/something. Usually objectionable.) He was so apeshit about that dame!
2. mod. drunk. (Acting as strangely or comically as an ape.) The guy was really apeshit. Couldn’t even stand up.
go apeshit over someone/something
in. to get very excited about someone or something. (Usually objectionable.) She really went apeshit over the ice cream.