Wow! I just stumbled across your mug and wanted to comment that I found one very similar to it. The version I have does not have teeth emphasization. I believe this mug is associated with the Tiki Trapper Restaurant that was once located in Hamilton, Ontario. Very Cool.
We got this from a couple of guys at Hukilau 06. They make cool tiki ceramic stuff like torch heads, a fountain which we also picked up and this cool moai decanter. They don't have a website yet but if anyone wants their email let me know.