- (often humorous) A whimsical monster in folklore and children's fiction; a bugbear.
- 1867, John Ballou Newbrough, The fall of Fort Sumter, or, Love and war in 1860-61, page 131
- […] and I want you to conflumux everything got up by Mrs. Davis or Miss Lane, or any other of these political whangdoodles.
- 1928 (Mar.), Martin Bunn, "When You Buy a Car", Popular Science 112 (3): 138
- "Now, Ben, you're a lawyer. You don't give a whang-doodle about anything mechanical."
- (poker) A ruling in which the opening stake limits are doubled for the next play after the appearance of a very good hand.
Of American origin circa 1856. Popularized by appearing in a sermon parody attributed to William P. Brannan as "Where the lion roareth and the whangdoodle mourneth for her first-born," published in The Harp of a Thousand Strings: Or, Laughter for a Lifetime (1858).