Any Asian whose face resembles an upside down shovel.
Typically refers to Koreans.
See also: shovel face
Girl 1 and Girl 2 are driving down the road as a small white Hyundai cuts across 4 lanes and slowly merges in front of them...
Girl 1: God damn zipper head just cut me off.
Girl 2: That wasn't any ordinary zipper head. It was a shovelface.
Girl 1: How can you tell?
Girl 2: Their face is so flat, it looks like a shovel.