To be on another planet

Pro Tip 1/3

Daydreaming Expression

Use when someone is not paying attention, as if lost in their own thoughts.

I called you three times, are you on another planet?

Pro Tip 2/3

Informal Speech

It's a casual phrase, more suitable for conversations among friends, not formal settings.

During the meeting, he was so quiet, like he was on another planet.

Pro Tip 3/3

Figurative Language

Don't take it literally; it's a way to express someone's disconnection from the situation.

You must be on another planet if you didn't notice the surprise party preparations.