내돈내산

naedon-naesan

What it means

Bought with my own money — a genuine, unsponsored review.

Where it comes from

Short for 내 돈 주고 내가 산.

When you'd use it

Marking a review as honest, not an ad.

Example

내돈내산 후기인데 이 청소기 진짜 좋아요.Honest review, bought it myself — this vacuum is great.

Careful

Very common in online reviews.