By Kate Nettleton, campaignlive.co.uk, Monday, 02 February 2009 11:35AM
The group has successfully constructed a slide, which twists and loops from their flat window down into their local newsagent.
When their mate is asked to pay in the newsagent, he quickly telephones his friends back at the flat, who then push a male doll holding a Barclaycard down the slide.
The doll eventually reaches the till point, beeping the card as it goes, before the lad calls up to his friends to turn the water off, saying: "You're flooding Imran's pick 'n' mix".
The viral promotes a competition being run by Barclaycard, which challenges consumers to make their own waterslide video in order to win a trip watersliding around the world.
This article was first published on campaignlive.co.uk