If you're a keen snowboarder but you don't live near a mountain, what are you to do? How about if there's a heatwave and all the snow is gone? Well, if you're an eccentric billionaire or work for a company like Happy Socks, you might be able to go Cloudboarding.
Simply hook yourself up to your helicopter (we've all got one) and head for the skies with your board. In this video, a spot for hosiery company Happy Socks, stuntman Adrian Cenni can be seen flying through the clouds at 80mph in one of the most extreme sports we've ever seen.
Yes, you're allowed to be jealous.