go ape

The phrase "go ape" is an idiomatic expression that means to become extremely excited, enthusiastic, or agitated. It originated from the behavior of apes, which are known for their energetic and wild actions. When someone "goes ape," they exhibit the same kind of intense behavior, often in a frenzied or unrestrained manner. It can also imply losing control or becoming irrational due to excitement, anger, or other intense emotions.