Seven per cent of Norwegian men and six per cent of women wear the same pair of undies for at least a whole week before changing to a fresh pair, according to a new poll. Norwegians with a high level of education change their underwear less often than those with a lower level of schooling, the survey of 1000 Norwegians, conducted by polling institute ACNielsen, showed. However, 65 per cent of those questioned say they pull on a fresh pair once a day, while 4 per cent say they change twice a day. Those least likely to change their knickers...