Neknominate. If you're wondering what it is, don't feel alone. It's a new social media game that's gone viral. However, in the process it's claiming lives worldwide.

Neknominate started as just a drinking game where someone would drink a lot, then challenge someone via social media to do the same if not more. The game has grown from drinking to excess, to doing embarrassing and dangerous stunts, some of which are killing young people.

ABC News has the story: