Definition & Meaning of "[go] ape"

What is the origin of the idiom "go ape" and when to use it?

The exact origin of "go ape" is unclear, but it likely emerged in the mid-20th century, drawing from the energetic behavior of apes and monkeys. It metaphorically describes people's enthusiastic or irrational behavior, reflecting the wild movements and exuberance observed in primates. This expression finds its place in various scenarios, such as concerts or sporting events where fans go into a frenzy of excitement, parties or celebrations where people let loose and engage in uninhibited behavior, or even in everyday situations when someone becomes overly enthusiastic or animated about something.