5. Cheese Rollingundefined

via goenglishmagazine

Cheese rolling involves rolling a single wheel of cheese down a steep hill while hundreds of drunk people tumble after it. It's where the rush of broken shins and bloodied chins meets the thrill of free cheese.

6. Limbo Skating

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Limbo skating involves skating under things, which wouldn't sound so extreme unless its record holder were a 6-year-old who skated under 40 cars. That happened.

 

7. Skywalking

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via amazingplanet

Skywalking started when some teenagers decided to get high and take stupid selfies, with a twist.

8. Shovel Racing

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via firsttracksonline

Shovel racing was once an event in the winter X Games, but was removed for safety concerns. Too Xtreme for the X Games? That's extreme.

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