When we go to, ehem, "grounds" of a poor quality
Football ground yer having laff, Football ground yer having laff, Football ground yer having laff, Football ground yer having laff...
One of my favourites, catchy fanchant, good ringtone. (Ed: Better audio version of this classic added)
Hello, Hello We Are the Chelsea Boys Chant
Another classic and makes a good ringtone.