John, who started this thread, has described the actions used in most of the rugby clubs I frequented in the 60's and 70's. At that time it was sung in Scotland but I don't think it is now - it's "an English song". One follow song up I have heard (to the tune of She'll be comin'round the mountain) is "you can shove your f***ing chariots up your arse".
After Saturday's result blacksmiths are fully employed mending the broken chariots. Well done the Irish.