Guy, Guy, Guy, stick him up on high Tie him to a lamp-post and there let him die. Holler Boys, Holler Boys, let the bells ring, Holler Boys, Holler Boys, God save the king.
There are verses too, which I'll look up when I get home.
It was sung on Maypoles to Mistletoe by the trio Arkie's Toast who, I think, assembled it from fragments from various sources.