Why so much hate for Kahn (and Mundine)?

[Gandalf]

I do dislike Khan now. Having read Khan's comments about the fight, he shows himself as a jumped up, gobby little shit and totally lacking in any class. Apparently he would have "brutally" knocked out Barerra within 2 or 3 rounds! He was given a gift scalp, he probably doesn't see that though. Prick!!

Any links to his nasty behavior? I know what gobshit means but what does GOBBY" mean?

Gobby is someone with a big mouth. Not nasty behaviour here, but arrogant and totally missing the point that he beat someone with an axe wound to the head and who was unable to see properly.

BBC SPORT | Boxing | Khan set for title fight in 2009