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Carol Vordeman is also an exponent of this type of thing. I remember a few years back, when she was still the number cruncher on Countdown. There had been some dispute or other about one of the facts proffered on the show. After the ad break, Vorderman announced that Channel 4 had had loads of phone calls during the break, offering various answers as to the etymology of the aforesaid fact..... quite some going, given that Countdown is filmed about 2 months before airing.