Chisora is acting like a dick because he has no real skill as a boxer. One of the people he has beat his Lee Swaby, who now works on the doors at some crappy nightclub where I live. The first real fighter he fought was the dude whos name I stole for my username. Tyson Fury. And Chisora lost. In his last 4 fights he is now 1-3. He had no business being in the ring with either Klitschko brother. I think Vitali knew this and is why he didn't react to Chisoras taunts.
Hes trying to use smacktalk to elevate his career. Sounds familiar!