Justin Bieber skateboard fall video

Justin Bieber went flying arse over tit when he fell of a skateboard outside Madison Square Garden in Sunday.

It is unclear why Bieber was attempting the skateboard tricks but the whole thing was being filmed for possibly an ad, a video or a TV show.

Bieber had a low-key 2014 after his embarrassing professional stumble throughout 2013 with a DUI, robbery charge and car accident. Last Saturday the troubled popstar hinted at a comeback.

Watch Justin Bieber attempt to surf a skateboard in NYC below.