前ぜん後ごを忘わすれる

expression, ichidan verb

lose one's common sense; forget the situation; lose oneself

Used when someone becomes so absorbed, excited, or intoxicated that they lose awareness of their surroundings or act without thinking. Often implies a temporary loss of judgment.

• 彼かれは酒さけに酔よって前ぜん後ごを忘わすれて大おお声ごえで騒さわいだ。

  He got drunk, lost all sense of his surroundings, and made a loud racket.

• あまりの嬉うれしさに前ぜん後ごを忘わすれて飛とび上あがった。

  I was so overjoyed that I forgot myself and jumped up.