I learned this expression today after two of my English colleagues used it. (The first time I misunderstood it. The second time I asked.) For those who are unfamiliar with it, it means "It doesn't matter to me," or "I don't care." Example: -Would you like to take the train or the bus? -I'm not bothered. As a speaker of American English, I had never come across this expression and am fairly certain it is not used this way in the United States (but I'm always prepared to be surprised. ). I'm just curious to know in which parts of the English-speaking world it's used. So far I know that it is used in England (probably all over, as one of my colleagues is from the North and the other is from the South). What about Scotland, Wales, Ireland, Australia, New Zealand, Canada, South Africa, etc.?