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general::
Phrase(s): born on the wrong side of the blanket
Rur. [of a child] illegitimate. • All his life, Edward felt that people looked down on him because he was born on the wrong side of the blanket. • Just between you and me, I suspect Mrs. Potter’s oldest child was born on the wrong side of the blanket.
McGrawhill's American Idioms And Phrasal Verbs