Firstly, I don't think people should necessarily be fined for a single incidence of verbal abuse. I also think that had the legal process been ignored, John Terry would have not been 'forced' to deny the charge and could have simply offered what I think would have been a far more dignified resolution by offering a public apology for his words..
It seems though, Rio Ferdinand thinks 'choc-ice' is funny. Even when levelled at a 'friend'. While it is not obscene, it is far from a friendly comment that some with strong cultural ties would find very offensive.
http://www.bbc.co.uk/news/uk-england-derbyshire-18870695