have a blonde moment

ちょっと金髪のおバカちゃんみたいなことをする

Ex

  • I just had a blonde moment.
  • Sorry…having a blonde moment.

Reference source

  • http://getreadyforpmp.blogspot.com/2010/07/blog-post_28.html
  • https://okwave.jp/qa/q3227460.html