[transreal]

It's not as unhygienic as you imagine. The machete touches the outside of the coconut only, and then they make a hole on the top in such a way that the machete doesnt enter the main chamber where the water lives. Then you put a single use plastic straw in to suck out the water. There is no material exchange between the inside and outside, so the outside can be dirty and you'll be fine. I usually watch the guy do a few to make sure he isn't doing something weird before getting one for myself.