You can see the thought progression of his friend on the right. "My god, Steve is crazy ha ha ha... Look at Crazy Steve... Woah... Steve... Woah! STEVE WOAH! Steve is... Gay Steve? Man, Steve."
I love that the camera guy was doing the typical panning about, giving everyone a few seconds to work it, until he landed on this guy. He probably knew he should move on, but just couldn't leave this talent undiscovered.
I hate to be the party pooper but this is a bit they do at pro baskteball games... It's the same bit everytime: everyone dance on the jumbotron and the last guy is a plant who's a little too into the dancing. I've seen this at Sonics games, Rockets games, Comets games, etc.