Green’s Dictionary of Slang

an erection; thus phr. this will give you the cockstand; cockstanding adj., sexually arousing.

1867		Rosa Fielding 16: [H]e had a tremendous cock-stand, and felt that if it was not allayed pretty quickly that he must burst.
1870		Cythera’s Hymnal 14: Cunt / [...] / Who always takes pleasure / To soothe a cock-stand.
1881		Sins of the Cities of the Plain 16: Frigging you has only given me half a cockstand at present.
1888–94		‘Walter’ My Secret Life (1966) I 19: I had no cock-stand, and am sure that I then did not know that the woman had a hole called a cunt. [Ibid.] X 2153: The two splendid creatures formed a most voluptuous spectacle — a cockstanding sight.
1899		Crissie 80: ‘Make him into vat you cal ze cockstand veeth your scharming, rubee leeps!’.
1909		Joyce letter 6 Dec. to Nora Barnacle in Ellman Sel. Letters (1975) 184: The smallest thing gives me a great cockstand.
1909		G.R. Bacchus Pleasure Bound ‘Ashore’ 39: A man feels a fool when he is standing naked with a cockstand.
1954		K. Amis letter 23 Jan. in Leader (2000) 363: Kingsley Amis’s uproarious, side-splitting, tear-jerking, cock-standing etc.
1973		(ref. to c.1917) E. Williams Emlyn 197: I passed a dozen Highlanders [...] fast asleep, knees up to the chin [...] the kilts had ridden up over their bellies and the summer dawn was kissing a row of the biggest cock-stands anybody’s ever set eyes on.
1973		A. Salkey ‘I into history, now’ Jamaica (1983) 9: You see all them / rass gal jus’ givin’ / all o’ we cock-stan’.
1984		(con. 1976) B. Simon ‘Black Dog’ Born in the RSA (1997) 8: You get a cockstand if you see an advert for stockings on the side of a bus even.
1989		H. Rawson Dict. of Invective (1991) 88: cock-stand. An erection.
2005		A. Lovejoy Acid Alex 170: I can see he has a moerse cockstand.