Noun
impoliteness resulting from ignorance
Source: WordNetTo the real artist in humanity, what are called bad manners are often the most picturesque and significant of all. Walt Whitman
As a child, I was taught that it was bad manners to bring attention to yourself, and to never, ever make a spectacle of yourself ... All of which I've earned a living doing. Audrey Hepburn
Good manners sometimes means simply putting up with other people's bad manners. H. Jackson Brown, Jr.
Evil communication corrupts good manners. I hope to live to hear that good communication corrects bad manners. Benjamin Banneker
Men sometimes have to leave their ladies alone, and ladies are not responsible for the bad manners of fools. Charlaine Harris
It's bad manners to talk about ropes in the house of a man whose father was hanged. Irish Proverb