'when dad finds out you borrowed his new car, crashed it into the house then set it on fire, he's gonna go apeshit
really really really angry or pissed off! its not uncommon to go [apeshit]: when the dog shits in yer slippers
"'when dad finds out you borrowed his new car, crashed it into the house then set it on fire, he's gonna go apeshit" What is the definition of "apeshit"?