I've got two words for you: Elephant... Polo. A brief history? It starts like a bad joke: Two British guys walk into a bar in Switzerland. They drink a little bit, (yada yada yada) and they form WEPA, the World Elephant Polo Association. No really that's how it happened.
The rules are pretty much the same as horse polo, except you substitute the horses with elephants. The differences are few, but important. You also obviously need really long mallets, that's one. Two, you have two people on the elephant one controlling the elephants movement and another operating the mallet.
Seems normal enough for a weird sport, but there's more. I started writing this post before I even finished reading the article, so this was a bit of a shock. I don't even know how to explain it so I'll just quote this article:
Ummm... yeah. I think I'm just going to slowly back away from this sport. In conclusion, if you want to find out more about Elephant Polo or weird perversions then you're on your own.