1. Nancy thought yesterday was Wednesday and now she thinks today is Sunday. She doesn’t know if she’s coming or going
2. First I packed all the wrong clothes, then left the bag behind, and waited for the taxi until I realized I had forgotten to call one. When it came, I couldn’t remember where I wanted to go. I don’t know if I’m coming or going

Antonyms: on the ball; get/have (one’s) act together. Compare to: out to lunch.