have a bad case of the simples

have a bad case of the simples

Rur. to be stupid. That boy has a bad case of the simples. He can't understand anything. She acts smart enough on the playground, but get her in the classroom and she has a bad case of the simples.
See also: bad, case, have, of, simple
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also:
Full browser ?