1833. Marryat, Peter Simple, ch. xxviii. ‘It’s my opinion, Peter, that the gentleman has eaten no small quantity of flapdoodle in his lifetime.’ ‘What’s that, O’Brien,’ replied I. ‘Why, Peter, it’s the stuff they feed fools on.’ 1861. Hughes, Tom Brown at Oxford. I shall talk to our regimental doctors about it, and get put through a course of fools’ diet—flapdoodle they call it, what fools are fed on. 1884. S. L. Clemens (‘Mark Twain’), Huck. Finn, xxv., 247. A speech, all full of tears and flapdoodle about its being a sore trial for him and his poor brother to lose the diseased [deceased]. 2. (venery).—The penis. (Urquhart). For synonyms, see Creamstick and Prick. To talk Flapdoodle, verb. phr. (American).—To brag; to talk nonsense. 1888. Daily Inter-Ocean, Mar. 2. Possibly rich men will turn from sharp dealing, from debauchery, from flapdoodle fashion to a common-sense recognition of a situation, which clearly shows that wealth is no longer what it used to be—autocratic, absolute, the ruler of all else. Flapdoodler, subs. (American).—A braggart agitator; one that makes the eagle squeal (q.v.). Flap-dragon, subs. (old).—The pox or clap (q.v.). For synonyms, see Ladies’ Fever. 1690. B. E., New Dict. of the Canting Crew, s.v. Flapdragon, a clap or pox. Verb. (old).—To gulp down hastily, as in the game of flap-dragon. 1604. Shakspeare, Winter’s Tale, Act III., Sc. 3. But, to make an end of the ship: to see how the sea flap-dragoned it! Flapman, subs. (prison).—A convict promoted for good behaviour to first or second class. Flapper, subs. (common).—1. The hand; also flapper-shaker. For synonyms, see Daddle and Mauley. 1833. Marryat, Peter Simple, ch. vii. My Dear Mr. Simple, extend your flapper to me for I’m delighted to see you. 1859. Matsell, Vocabulum, or Rogues’ Lexicon, s.v. 1866. London Miscellany, May 19, p. 235. ‘There’s my flapper on the strength of it.’ Guy shook hands with the eccentric stranger heartily. 2. (common).—A little girl. [Also a fledgling wild duck.] 3. (venery).—A very young prostitute; cf., sense 2. 4. (common).—A dustman’s or coal-heaver’s hat; a fantail (q.v.). 5. (in. pl.).—Very long-pointed shoes worn by ‘nigger’ minstrels. 6. (venery).—The penis. (For synonyms, see Creamstick and Prick). 7. (colloquial).—A parasite; a remembrancer. (Cf. Swift, Gulliver, ‘Laputa.’) Flapper-shaking, subs. (common).—Hand-shaking. 1853. Bradley (‘Cuthbert Bede’), Verdant Green, pt. II., ch. iv. Wondering whether ... if the joining palms in a circus was the customary flapper-shaking before ‘toeing the scratch’ for business. Flap-sauce. See Flapdoodle. Flare, subs. (nautical).—1. Primarily a stylish craft; hence, by implication, anything out of the common. For synonyms, see Stunner. 2. (colloquial).—A row; a dispute; a ‘drunk’; or spree. Cf., flare-up.