Aldi has revealed that its John Lewis Christmas ad spoof was off-the-cuff, with the 'Man on the Moon' parody taking just ten days from script sign-off to airing on TV. Earlier this week, the discounter unveiled a humorous send-up of the touching John Lewis Christmas campaign. Like the original version, Aldi's spot featured a lonely, elderly gentleman stranded on the moon. But using his budget Aldi telescope, he spots that a gift from planet Earth is on its way, in the form of Aldi granny Jean Jones.