interracial = dissimilar race or different skin colour
kao-yin = marriage in "Hookien"
so by definition, it means to marry another guy/girl of different nationality/race.

Usually for guys, they go for interracial kao-yin because girls of other culture is better (Asians = more obedient generally or Ang-Mo = big and tasty). For girls, it is only for a few reasons, either they are richer or they have thicker shaft diameter.
"Chris : Eh bro, you know that Amanda? She go marry the Or-Lang eh..
Jay : Of course la, our size cannot satisfy her ma, you don't know meh? that is why, she go for interracial kao-yin."
by TryMeNoHate April 12, 2016
Get the interracial kao-yin mug.