鳥とり頭あたま

noun

birdbrain; scatterbrain; forgetful person

Colloquial and mildly self-deprecating or teasing term for someone who is very forgetful or has a poor memory, likening them to a bird's supposedly small brain.

• また約やく束そくを忘わすれたの？本ほん当とうに鳥とり頭あたまだね。

  You forgot our plans again? You're such a birdbrain.

• 私わたしは鳥とり頭あたまだから、すぐにメモを取とらないと忘わすれちゃう。

  I'm so forgetful that I have to write things down right away or I'll forget.