A cabaret band - who prided themselves on their vast repertoire - were playing a local Sunday morning residency and were approached by a punter who requested that they play "Paddy, Me Boy". They conferred amongst each other and, after much scratching of heads, were disappointed to find that none among them knew the tune. So they asked the punter if he could give them a few clues, hum a few notes, anything ...

He was surprised they didn't know it and sung the first line "Paddy, me boy, is that the Chattanooga choo-choo ..."