The ALS Ice bucket challenge is the coolest charity ever and that goes literally too. It's trending everywhere and youtube videos of people doing it are spreading like wildfire.

The rule is simple, a celebrity or someone is given the choice to donate $100 or pour a bucket of ice over themselves. Then they can challenge 3 more people to do it.

Mark Z, Bill Gates, Vin Diesel, Conan, Justin Bieber and Lady Gaga are just among the few to have accepted it. Putin and Obamma got challenged but bought refused.

Even local celebrities from different countries has started to participate. This is probably the next big fad after gangnam. And it's charity!

It's really cool guys, go and search it and enjoy the vids