FWIW, I was a kid raised on the street, quit school and did union ironwork for over 20 years, then worked as a pro tattooer in street shops for 20+ years. My mouth was as foul as the worst of them, but I was transformed by a renewing of my mind, and let no filthy communication come out of my mouth. It is not what goes into a man's mouth that pollutes him, but what comes out. YMMV.