So funny it will make you sick-Time OutFor several years, Robin Cooper has been plaguing department stores, hotels, associations, fan clubs and a certain children’s book publisher with his letters.From Prince Charles to the Peanut Council, Harrods to the British Halibut Association – no one is safe.So who is Robin Cooper?Architect, thimble designer, trampoline tester and wasp expert, Robin Cooper is all of these things – it just depends on the person he’s writing to…