In case you’ve been under a rock recently, the ALS Ice Bucket Challenge has taken the Web by storm. What exactly is the positive trend? To grow awareness about ALS, or Amyotrophic Lateral Sclerosis, everyday folks and celebrities have been dunking themselves in ice water. Now, one of the richest men in the world has joined in on the meme. Watch as Bill Gates uses his nerd powers to create a special water dunking device and soaks himself all for charity.