A few years ago I was in Boston and got pulled over by the police for speeding... the officer started talking and I could understand almost everything (it's a little bit complicated that accent, like a mix between American standard accent and British accent), but there was something he said I couldn't get... he repeated and repeated time and time again and I still couldn't get it.. he also kept asking if I spoke English, and I kept saying yes... but in the end he gave up because I couldn't understand that part. Fortunately all I got was a warning, no ticket