English phrase from drama scenes

What Does "i don't know what i was thinking" Mean?

Learn what "i don't know what i was thinking" means, when people say it, and how to use it naturally in English.

Beginner
Neutral
Soft
Apologize

I don't know what I was thinking.

This means the speaker regrets a past decision and admits it was foolish.

From The Dumb Billionaire Heiress In Love Part I, Episode 8

When do people say this?

Scene Context

Someone admits they made a bad or confusing decision earlier.

Usage Scenario

Use this to admit regret or explain a bad choice. It is common in apologies and self-criticism.

Better ways to say it

1
I don’t know what I was thinking.
2
What was I thinking?
3
I wasn’t thinking.

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How to Apologize in English

What Does "i don't know what i was thinking" Mean? - ReelFluent