I was on the train earlier, sitting near to this young couple who were aguing loudly. Next to them was their young child, probably no more than four years of age, and the language from the parents was astonishing. Not just 'arse' or 'bugger', but words like 'fuck' and 'cunt' repeatedly. Would anyone here swear like that in front of their kids, or do you find it unacceptable?