What makes a good Tiki Mug?

What defines the make up of a good tiki mug? Is it only mugs with a polynesian or asian flair, or can any african elements be allowed? Or is totally up to the persons likes and dislikes? I have read so many posts about Tiki being "IN" and how many "POSERS" are moving in on the good thing that is TIKI, I just am looking for a little enlightenment :tiki:

See my post in "I think I just won one of the ugliest mugs every"...