to know b from a

Dictionary of American Words And Phrases by John Russell Bartlett.

bull's foot. It is a common phrase to say, "He does not know B from a bull's foot," meaning that a person is very illiterate, or very ignorant. The term bull's foot is chosen merely for the sake of the alliteration; as in the similar phrases, "He does not know B from a broomstick;" or "B from a battledoor." It is a very old saying; Mr. Halliwell finds it in one of the Dighy MSS.


I know not an A from the wynd mylne,

Ne a B from a bole-foot, I trowe, ni thiself nother.

Archaic and Provincial Glossary.

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