A very rich man has two houses. Both identical both the same in every aspect. One in Cali and the other in Africa.
He has a very wild party in is house in Cali and passes out drunk. His friends decided to play a joke on him and fly him to his house in Africa and put him to bed.
The next morning he wakes and wants and drink of water and goes into the bathroom for a drink of water. He turns on the water and and says ''What am I doing in Africa?'' How did he know he was in Africa and not Cali?
Below the equator the water flows down the drain counter clock wise as oppose to above the equator where it flows down the drain in a clock wise fashion.