This is what my friend Sean Oglesby (from Inchicore, Dublin) used to sing:

Now what are the joys of your jolly Jack Tar
And what are the joys of the belles in Dubois (? Poss. mondegreen)
And what makes England the land of the free
And if another French war there should be
Where would you find all the bold R.U.C?
Boozin', bloody well boozin'.