hey guys, i was just wondering what this move i can do is called, 1 guy did it a lot at the mixtape tour and then the next day me and a couple of friends who went tried to do it, i got it almost straight away but they still cant do it haha

i dont no any1 else who can do it and i havent seen it anywhere except for the mixtape tour and on nba street. here is the move
http://www.youtube.com/watch?v=93YKIQ44_cU