It was one of those old jokes at Junior School, you'd make up book or song titles with an amusing (if basic) link. I remember "Mud on the Wall" by OO Flung Dung, "No Bikini Bottoms" by Seymour Hairs and "Yellow River" by I P Daly. Well, old I P Daly, who I would guess has Irish roots, has no gone into the leakage detection business, judging by his van, spotted today in the Asda carpark...