We had an "intellectual" discussion at dinner where difficult child insisted it was okay to use the F-word in casual conversation at school as long as you're not deliberately getting into someone's face with-it. He insisted, in his Aspie way, that what we do at home is not what we do in the outside world because they're two different places. I told him that what we teach him is for himself and for the outside world. We are teaching him life skills. Argue, argue, argue. I did not get mad but I certainly didn't make any progress. He clearly doesn't have a leg to stand on and just wants to do what he wants to do. Any suggestions?