Well I've written this one today:
The whole stadium
loudly cheers
We’re the blue and white supporters
It matters not where we hail from
Whether it's the south or the north
Now we all agree, we all agree,
One flag unites us in brotherhood.
Blue and white blowing in the wind
One valiant cry
We’ve got a name that everyone knows:
Cardiff, Cardiff, Caaaaaaaardiff
Players, Supporters
United we are strong.
We’ve achieved much over the years,
We’ve shouted many goals
And we have shown, we have shown,
That no one can ever break us.
Blue and white blowing in the wind
One valiant cry
We’ve got a name that everyone knows:
Cardiff, Cardiff, Caaaaaaaardiff
and now for a tune..........................................
http://www.youtube.com/watch?v=ChFJOYO622Y