Your Head Very Small

When I first wore a baseball hat in little league, I learned I had a small head. Having given up hats for the most part, I had forgotten how my head size compared to everyone elses until I got to Korea. "Your head very small" is a common follow up to, or replacement for hello. The sunglasses saleswoman was the latest in the many culprits. I think it's a compliment (Korean celebrities tend to have comparatively smaller heads) but saying thank you just feels weird.