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		| Originally posted by ThurgreedMarshall Well then, I don't understand how your approach of politely asking someone to clarify how something is ironic is a solution to anything.  It would seem to me that if someone is fucking something up and you tell them that they are doing it incorrectly, they probably won't do it that way again.  If you try to be clever in the most subtle, yet superior way, your cleverness may go unnoticed or flat-out ignored.
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 Asumes the mistake corrected is a one-off or rarity.  You can hope to remedy a discrete problem, but random friendly reminders won't make up for a misspent youth in which proper grammar wasn't learned.  For that, the speaker has to take it upon themselves to basically retrain themselves entirely from scratch - think through every single thing they say before they say it, and not say it (until they go back and check) if they aren't sure.  With any luck, that will reduce errors back to a relative rarity, making the odd friendly clarification something more than a whisper into a hurricane. 
If subtle correction is unnoticed or ignored, that seems to imply that the corrections are unsolicited.  In which case, see prior comments on trying to correct adults.