A more gauche version of Elgar's song is sung at rugby matches and hash runs:

Rule Britannia, marmalade and jam,
Five Chinese crackers up your ass go
BANG, BANG, BANG, BANG, BANG
Rule Britannia, marmalade and jam
Four Chinese crackers up your ass go
BANG, BANG, BANG, BANG

And so on down to zero, when the music reverts to Why are we waiting ? or some other favourite.