noun, noun or participle which takes 'suru'
losing one's cool; blowing one's top
Slang for suddenly becoming extremely angry or furious. Often used among younger speakers.
See also: キレる
あの先生、ちょっとしたことでガン切れするんだよ。
That teacher totally loses it over the smallest things.
彼はガン切れして、机を蹴った。
He blew his top and kicked the desk.