Media playback is unsupported on your device

#BBCtrending: The story behind #Neknomination

5 February 2014 Last updated at 13:17 GMT

The online drinking game 'Neknomination', which involves filming oneself whilst 'necking' a drink, has gone viral on Facebook.

Participants post their videos on social media and then nominate someone else to do the same.

Its popularity has come at a price, after a teenager died in the Republic of Ireland who allegedly took part in a 'Neknomination'.

Produced by Anne-Marie Tomchak and Neil Meads.

All our stories are at BBC.com/trending

Follow @BBCtrending on Twitter and tweet using #BBCtrending

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.