RichardIt's got a meaning alright - the problem is to remember it or find it! (name of a landlord, offhand?) I never sing that verse myself - too many people's heads come up as though to say "What's all that about?"! I'll check on it when I get a chance.
Regards
p.s. I'm between honeymoon and Willy Clancy week so be prepared to interpret "when..." fairly liberally!