At least five deaths are being blamed on a dangerous new drinking game that's playing out on social media.
It's called "NekNominate" and it features teens and young adults filming themselves drinking an excessive amount of alcohol in a short amount of time.
They post their videos on social media, then dare their friends to outdo them.
According to CNN, at least five men under the age of 30 have died after playing this game.
It's believed to have started in Australia, but is now sweeping through Great Britain.
Some have called on Facebook to get involved by taking down NekNominate videos.
Facebook released a statement to one British news outlet saying, "We do not tolerate content which is directly harmful, for example bullying, but behavior which some people may find offensive or controversial is not always necessarily against our rules. We encourage people to report things to us which they feel breaks our rules so we can review and take action on a case by case basis."