Video: Human Mattress Domino World Record Smashed
The chance to break the "mattress dominoes" world record was one that a group of 850 people in New Orleans could take lying down.
A Guinness representative was on-site to judge the event and present the World Record certificate in Louisiana.
Until now, the largest human mattress domino involved 550 people, a record achieved in 2011 in Kortemark, Belgium.
Mattresses for the event were donated, and will now go to various local charities.