Would be funnier if it was the real Carmelo Anthony, but it's pretty wild nonetheless. If you don't speak Twitter, basically a Knicks fan by the name of Matthew Shin, aka @Melo4MVP, put out a tweet saying if if Knicks fans retweeted it 2000 times he'd smack Jeff Green in the face at the next Celtics/Knicks game. Jeff Green responded (as he often does to people who say something negative about him on twitter) with "Make it 50 retweets."
Shin then said, "KEEP DOING IT! WE GUNNA BE FIGHTING BOY" to which Green offered to get Shin tickets and passes to accommodate Shin's desire for a fight (which Green would destroy Shin in). Oh Twitter.