Go ape/apeshit Definition 1 of 3Pro Tip 1/3Expressing Anger Use it to express intense anger, stronger than just 'annoyed' or 'upset'. I'm going to go ape if this printer jams one more time! Pro Tip 2/3Colloquial Intensity Heightens the description of a reaction to convey a very animated response. When he dropped his phone, he totally went ape. Pro Tip 3/3Causal Consequences Implies that a specific action or event triggered the strong reaction. Mom went ape when she found out I borrowed her car without asking.