Not sure if you are being deliberately obtuse or you genuinely believe this. The point is that if it was sung to you, it wouldn't have a racist connotation. In the context of what happened between Ferdinand and JT and given that the song originated amongst Chelsea fans, a lot of people have interpreted it as racist. Therefore if you choose to sing it at Ferdinand, you now do so with the knowledge that it has a racist interpretation and your argument that it isn't racist is much weakened.