This demonstration is making me dizzy.

This is a cool video demonstration about how water goes down the drain differently when you are North or South of the Equator.  The demonstration starts on the Equator and the water that is drained from the sink does not spin around the drain, it just goes straight down.  Then they move to the South and the draining water spins clockwise circling the drain.  They move to the North and the flow is counter clockwise down the drain.