The Bunun custom of pulling two upper teeth from the front of the mouth was a kind of initiation rite for the tribe's fifteen and sixteen-year-olds, without which the young men would not be brave in war and the young women would not be able to weave clothes.
拔牙是過去布農的傳統風俗，類似所謂的「成年禮」。到了十五、六歲，就要拔去上顎的兩顆門牙，否則男人「出草」時不勇敢，女人則不會織布做衣服。