When my barber found out that I was going to Peru he had one question:
"Can you find out if the toilets flush counter-clockwise?" He always wanted to know if toilets in the southern hemisphere flushed the opposite direction.
I did a little research and found a nice article that said that they didn't. The science (which I don't really understand) says that if the body of water is big enough it would flow counter clockwise, but a toilet is not nearly big enough.
So it was quite a surprise when I flushed a toilet in the Lima airport and saw that the water did in fact flush counter-clockwise. This also happened in the Trujillo airport, and in all of the toilets we had in El Milagro.
So the mystery was solved: Toilets in the southern hemisphere flush counter-clockwise.
Then last week we rented a condo in Gatlinburg.
And the toilets flushed counter-clockwise.
Bottom line (pun only partially intended): Sometimes toilets flush clockwise and sometimes they flush counter-clockwise. And I have no idea why.