LONDON (Reuters) - A harrassed British grandmother was in such a hurry to post her Christmas cards she did not notice that wedged between them were her new false teeth. Postal workers said the 74-year-old woman, who has not been named, appeared at a post office in Witham, northeast of London, asking if anyone had found the 170-pound ($280) dentures after she realised she had posted them. "She just came in here and she posted her teeth, so she reckons," said astonished postman Dave Lee. The yarn caused a flurry of gummy granny jokes in Britain`s media but she was not amused. "It`s not such a joke when you haven`t got your real teeth," she said, adding: "I`ve had to put my old ones back in."