Stashed in: Boxing!, gifs, Best Videos, Awesome!, Fight Club, BRO!
He was probably quoting some rap lyrics / trash-talking just before getting his ass handed to him.
COME AT ME BRO
And while I'm at it...
Felix Baumgartner freefall gifs
Aww Yiss Owl gif - Motherfuckin Bread Crumbs!
The Mystery of the Red Cards gif
Coolest Street Performer video: Human Transformer