VIDEO: Some Irish lads have invented a painful-looking 'sport' called Stair Surfing

Here's a sport that you can practice at home without any fancy equipment - all you need is your stairs and a willing partner.
Introducing Stair Surfing.
Patrick Fingleton uploaded this video of him and his mate Aaron demonstrating the finer points of the sport.
It looksâŠsore.
Ok so they may be after a few drinksâŠ
(Please don't do this at home. Seriously.)