SriLankan foreign Minister in India: Yes Sir, no sir, three bags full, Sir. Source: Internet
The 10 most important words in our language (that we should have learned by the time we hit Kindergarten are: "Yes Sir, No Sir, Yes Ma'am, No Ma'am, please and thanks!" Source: Internet
Our parents were fervent believers in the philosophy that Manners Maketh Man. You greeted yours neighbors with a Yes Sir and a Yes Ma’am. Source: Internet