Remember when neknominations were a thing? Or the No Makeup Selfie? Well, we've got a new one - the Ice Bucket Challenge.
What it entails is simple - you dump a bucket of ice water over your head and challenge three more people. It's to raise awareness for ALS (that's Amyotrophic Lateral Sclerosis), otherwise known as Lou Gehrig's disease.
So who's been nominated so far? Well, Mark Zuckerberg kicked off the challenge and nominated Reed Hastings, owner / creator of Netflix, Facebook's Sheryl Sandberg and Microsoft's Bill Gates.
Gates, being an engineer and general brainy git, decided to come up with a novel way of doing his Ice Bucket challenge.
Take a look!
