頭あたまに血ちが上のぼる

expression, godan verb (-ru)

lose one's cool; get angry; blow one's top

Idiomatic expression for suddenly becoming very angry, often implying a loss of rational control. Used in informal contexts.

• 彼かれはその言こと葉ばに頭あたまに血ちが上のぼって、怒ど鳴なり始はじめた。

  He lost his cool at those words and started shouting.

• 頭あたまに血ちが上のぼると、何なにを言いうかわからない。

  When I blow my top, I don't know what I might say.