out to lunch

成語所屬單字lunch

out to lunch — 慣用語

1. Someone who is out to lunch is not paying attention or acting in a strange way.

1.慣用語
釋義

心不在焉的

Someone who is out to lunch is not paying attention or acting in a strange way.

例句

Maya was completely out to lunch during the meeting yesterday.

Is Brian out to lunch, or did he just forget our plan?