inside words and outside words

Do you ever say what should be an inside word as an outside word? I mean, do you blurt out something that would have been better left unsaid? I find that as I get older I am doing this a little more often than I should. Does it mean that eventually I will be one of those rude old ladies who thinks nothing of telling someone that they are fat, or ugly? Or does it mean that I am just tired of playing games and want a bit more honesty? Dangerous game though isn't it?