Ga-ga: Having allegedly started in Israel, this game is basically dodgeball, but you can only hit players beneath the knees.

Kaninhop: Also known as "bunny jumping," this Swedish sport is basically equestrian show jumping with rabbits.

Camel Wrestling: Although it has been criticized by some animal rights groups, camel wrestling is still a major pasttime in countries like Turkey.

Moustache Growing: Although the sportiness level of this sport is debatable, purists claim that the difficulties associated with growing a winning 'stache are worthy of a spot on this list.

Mountain Unicycling: As if biking along deadly crevices with two wheels wasn't hard enough.

Cardboard Tube Fighting: It's a real sport, and the Cardboard Tube Fighting League is a real sporting organization.

Cheese Rolling: Every year a large group of people chase a piece of cheese down a hill in Gloucester, England.

Chess Boxing: For 11 rounds contestants alternate between chess and boxing. A victory can be due to knockout, checkmate, or judge's decision.

Toe Wrestling: If you can imagine a thumb war with your toes, then you get the idea.

Bossaball: Invented in Spain, this sport is basically volleyball on a trampoline.

Octopush: It's basically underwater hockey, except instead of a stick you use a short blade.

Snow Polo: Often played on frozen lakes, this sport started in Switzerland and has since caught on in other parts of the world.

Bog Snorkeling: Competitors race through a murky bog, but they aren't allowed to use their hands. It's flippers only.

Quidditch: Part tag, part dodgeball, the snitch is actually a toy helicopter.

Roller Derby: Played mainly by women, the goal of this sport is basically to lap the players on the other team. Apparently it almost made it to the Olympics recently.

Buzkashi: Played on horseback throughout various parts of Asia, the goal of this game is to get the carcass of a headless goat across the other team's goal line.

Ferret Legging: The goal of this sport is to hold two ferrets in your pants for as long as possible. To beat the world record you'll need to do better than 5 hours.

Bo-Taoshi: The name roughly translates to pole-pulldown in Japanese. With two teams of 150 people trying to pull down each other's pole, things can get quite hectic.

Wife Carrying: The objective is to complete an obstacle course while carrying your (or someone else's) wife.

Man vs. Horse: This annual Welsh competition involves contestants racing through an obstacle course against horses.

Shin Kicking: Whoever concedes first loses. Simple enough.

Kite Tubing: With several deaths and numerous injuries recorded in the past few years, this sport might be even more dangerous than mountain unicycling.

Bellyflopping: You'd be surprised how seriously some people can take this sport.

Extreme Ironing: You're probably somewhat familiar with this one already due to recent guerilla marketing, but for those of you who don't know, the goal is to basically iron in the craziest place possible.