I was also brought up on a council estate (and proud of it) and having many jobs mixed with all sorts of people from differing backgrounds where the language used was often, shall we say, near the knuckle. I have been known to use a few words in given circumstances but age and experienced has mellowed me (although they can slip out occasionally) but I'd like to think that I'm a rather nice well spoken good mannered individual to be around...although I'm sure there are many who would disagree!!