to get so angry that you lose control and start waving your arms around whilst screaming abuse, a violent attack on someone or something
i got that pissed off so bad I was gonna go ape-shit,that clown deserved it when a smashed him when I went ape-shit
to go ape- shit is to go completely crazy, to give up on any logical way to solve a problem and resort to violence.
Oh no you didn't
Im gonna go ape-shit on your ass!