As retweeted into my feed by @MGoJen, @TFos_ says:
Norfleet is a member of Omega Psi Phi fraternity and thier song is Atomic Dog, when it goes on their members go nuts. It's a tradition.
TheMoreYouKnow dot Gif
I thought I saw him make the Omega symbol with his hands near his head at the end, but I didn't make the connection. Notable Omegas include Vince Carter and Shaq. Very cool way for Norfleet to get himself pumped up, energize the crowd, and represent history.
Anyone who doesn't like 20 year olds getting excited must be real fun at parties.