Born In A Barn Meaning

Example : 1971, Joyce Carol Oates, Wonderland: A Novel, Vanguard Press, p. 76:  His aunt said angrily: "Fritz, were you born in a barn? Don't you have any manners?"2002 June 19, Ruth Ann Baker, "Even wolves behave in the pack," Pittsburgh Post-Gazette, p. N4 (retrieved 15 Sep 2008):  Phone at a symphony concert? I'd ask if these people were born in a barn, but that would disrespect the animals.Of humble birth, especially when referring to Jesus Christ.2007 July 6, "A Catholic vision for farm and town," National Catholic Reporter (retrieved 15 Sep 2008):  No surprise really for followers of Jesus, who after all was a rural dweller himself, born in a barn.2006 Oct. 20, Heather Murphy, "The More the Merrier?," Washington Post (retrieved 15 Sep 2008):  Neither bothered to lock or shut the house's front or back doors. "It was like they had been born in a barn," she says.