A Lie that is socially acceptable to perpetrate in order to evoke/indoctrinate a particular behavior or belief from an individual or group of people.
Examples of "White Bearded Lie":
If you are good all year Santa will bring you presents for Christmas.
Yes fluffy will go to heaven.
If you lie your nose will grow long.
Too much TV will make your eyes go square.
Sexual Intercourse is something that happens between a man and a woman who love each other very much.