A stupid, flighty woman. Boy, she's a real dumb Dora—how'd she even get this job?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a stupid woman; a giddy woman. Who’s the dumb Dora with the blonde hair and long fingernails?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
A dimwit female. The phrase was popularized by George Burns and Gracie Allen's vaudeville act in which Gracie played the hysterically illogical character that she later made famous under her own name during the pair's radio and television career. Chic Young, better known for his Blondie comic strip, illustrated a foolish flapper named Dumb Dora. The cartoon lasted under several other illustrators from 1924 till 1935, well before “dumb blonde” became all the rage.
Endangered Phrases by Steven D. Price Copyright © 2011 by Steven D. Price