Green’s Dictionary of Slang

1. the posterior, the buttocks; also attrib.; thus crupper, ride below the crupper v., to have sexual intercourse.

1578		T. Lupton All for Money E1: Gylle my olde mare must haue a newe crupper.
1605		Chapman & Jonson Eastward Ho! II iii: Then clothe but her crupper in a new gown.
1613		Beaumont & Fletcher Coxcomb II iii: Go quietly, or I’ll make your crupper crack.
1628		R. Speed Counter Scuffle C: He gave the Captaine such a mall, / As made him thumpe against the wall / His Crupper.
1637		R. Brome Eng. Moor III iii: The devil is in these young Tits, / And wildfire in their Cruppers.
1641		R. Brome Jovial Crew III i: I am sorely surbated with hoofing already tho’, and so crupper-crampt with out hard lodging.
1654		Mercurius Fumigosus 11 9–16 Aug. 105: Her leggs fast girt about my waste, my hand under her Crupper, / As who should say, now break your fast, and come again to supper.
1664		C. Cotton Virgil Travestie (1765) Bk I 59: There as she sat upon her Crupper, / She bad her Folks to bring in Supper.
1672		J. Phillips Maronides (1678) V 55: Euryalus, a youth most proper, / Shews all to Ladies but his Crupper / For he had nothing on but’s drawers .
1680		M. Stevenson Wits Paraphras’d 53: To crack your Crupper with a stumble.
1690		‘Voyage to Maryland’ Mundus Muliebris 2: Four Petticoats for Page to hold up, Four short ones nearer to the Crup.
1692		‘Norfolk Stiff-Rump’ in Pepys Ballads (1987) V 419: Apple dumplings [...] will rarely well strengthen his Crupper As much as a Woman can wish.
1709		N. Ward Compleat and Humorous Account of Remarkable Clubs (1756) 99: To adjourn from hutling of stamp’d Copper to the Jostling of Female Cruppers, that the Exercise of the Tail may allay the Fury of the Tongue.
c.1729		‘John & Susan’ in Farmer Merry Songs and Ballads (1897) III 256: Both Morning, Noon, and Night, Sir, / Brisk John was at her Crupper; / He got in her Geers / Five times before Pray’rs, / And six times after Supper.
1764		K. O’Hara Midas I v: He, with kicks o’ th’ crupper, Will make Pol dance.
1772		Bridges Burlesque Homer (3rd edn) 4: And as for you, / Smite my own crupper black and blue, / If both your cap and gilded stick / Shall save your crupper from a kick.
1797		Bridges Burlesque Homer (4th edn) II 55: Just as they clapp’d ’em on their crupper.
1812		Spirit of Irish Wit 142: A Hibernian nymph of the Paphian order [...] was known by the appellation of Crupper Nancy.
1827		‘The Mill’ British Minstrelsy 110: He’s queered his optics – floored him right down upon his crupper bone.
1836		T. Haliburton Clockmaker I 105: They are actilly in hot water; they are up to their croopers in politics, and great hands for talking of House of Assembly [...] and what not.
1838		‘Paul Pry’ Oddities of London Life I 55: [H]is blissful reveries were suddenly dispersed by a thundering kick on the crupper.
1843		T. Haliburton Sam Slick in England I 196: Darn that pig [...] It hurt me properly, that’s a fact, and has most broke my crupper bone.
1989		J. Hibberd Memoirs of an Old Bastard 62: The wines had been selected [...] These did not warm their cruppers so much as the hocks.

2. the penis.

c.1720		‘Original Black Joke. Sent from Dublin’ 🎵 His cruper [sic] her saddle did not fit.
1836		‘Riding St. George!’ Comic Songster and Gentleman’s Private Cabinet 31: Your crupper is just the thing! [Ibid.] 33: For an hour or two with such joy, / She handled and dandled my crupper.