Justin Bieber's greatest skill as a skateboarder might be his perseverance ... because while most people would give up after failing over and over ... the Biebs just keeps on going. <br /> <br />Bieber was trying to show off his skateboarding skills for a throng of fans near Madison Square Garden in NYC over the weekend. The Beliebers all stood back as he tried to ollie down a few stairs ... but it didn't go well. <br /> <br />Justin kept trying the trick over and over, and the final result? <br /> <br />Well ... just watch. <br /> <br />Read more: http://www.tmz.com#ixzz3NMQTrrhp
