go ape
verb1
Slang To become wildly excited or enthusiastic.
2
Slang To become very angry.
- "Forgot to tell you. Some reporter found out we had a Russkie up here and tried to bluff his way onto the floor. A nurse stopped him. Admiral Blackburn found out and went ape. The whole floor's sealed off. What's the big secret, anyway?"1984, Tom Clancy, “The Eleventh Day: Monday, 13 December”, in The Hunt for Red October, Annapolis, Maryland: Naval Institute Press, →ISBN, page 267:
- Synonyms
- go apeshit, go bananas
- Related terms
- chimp out