I was tired and on auto-pilot late in the evening, trying to reach the crowd in a country club bar where everyone was my father's age. I decided to do Carolina In The Morning and didn't realize I had sung the blisteringly bawdy first line of the parody until a friend of my wife's called out from the back "Oh Tony!". Too late to pull that one back through the microphone. That was 20 years ago and I can still hear her say it as clear as a bell. But, as has been said earlier, no one else seemed to notice. But if I could have one 'do-over', I'd take it right there, for sure.
TonyK