Classic terrace song, from the tune of The Halls of Montezuma US marine song. Sounds awesome on the terraces (Ed: New, better audio added).
From the banks of the River Irwell,
To the shores of Sicily,
We will fight fight fight,
Till we win the football league,
To hell with Liverpool,
To hell with Man City (they're sh*t!),
We will fight fight fight for United,
Till we win the football league...
Cut/paste the following HTML code into your blog/CMS, source code; or email it to your web developer and ask him/her nicely to do it for you.