Okay, it's stolen from a John O'Shea song, but really when are united fans ever going to sing it? It works better this way too:
To the tune of The Animals go Marching
When Johnny goes marching in the box, CAREW, CAREW
When Johnny goes marching in the box, CAREW, CAREW
When Johnny goes marching in the box, CAREW, CAREW, the Holte End will stand sing
'Cause we all know that Johnny's going to score