우물 안 개구리

umul an gaeguri

Word for word

“A frog inside a well.”

What it means

Someone who knows only their own small world and thinks it's everything.

When you'd say it

Encouraging someone to travel or learn beyond their bubble — or teasing yourself for not having.

Example

외국에서 일해 보니까 내가 우물 안 개구리였더라.Working abroad, I realized I'd been a frog in a well.