"Mind Your Language." Even Kids Know That.
However even at that young age, amongst us were the rotters who did not then and still have not now, heeded that practical and common sense advice from our teachers. Many of these rotters have fallen by the wayside while some have made it despite their propensity to use bad and vulgar language, cursing, insulting, humiliating and belittling anyone who dares to question them. The successful among these rotters have somehow managed to go against the grain of civilised norms of behaviour, both verbal and physical and still made it in their lives. Whether they have the attributes to be called gentlemen is a different matter.
These are the people who despite their advancing age need to be reminded like school kids, again and again, to mind their language.