Green’s Dictionary of Slang

an all-purpose teasing, dismissive excl.; nonsense! humbug! rubbish!

1812		Vaux Vocab. of the Flash Lang. in McLachlan (1964) 278: walker an ironical expression, synonymous with bender, and used in the same manner.
1825		Bell’s Life in London 10 Apr. 2/3: [T]he ostler says to me, ‘you’ve lost a shoe, Sir.’ ‘Valker’ says I, and I ups with my thumb again to my nose—l don’t vear no shoes.
1838		‘Alfred Crowquill’ Seymour’s Humourous Sketches (1866) 167: a jentlum as vos by vanted to oan ’im an offered any blunt for im but walker! says i there ain’t sich a ass as this ’ere hanimal in the hole country.
1837–8		R. Nicholson Cockney Adventures in Matthews Cockney Past and Present (1938) 48: So ven he com’d and told me on it, says I, ‘Bill, vy you’ve been done.’ – ‘That be d—d,’ says he; ‘I’ll swear it,’ says I; ‘Walker,’ says he, but another of our party told him the same, and then he began to think as it vos true.
1841		C. Mackay Memoirs of Extraordinary Popular Delusions (1869) 241: Hookey Walker, derived from the chorus of a popular ballad, was also high in favour at one time, and served [...] to answer all questions. In the course of time the latter word alone became the favourite, and was uttered with a peculiar drawl upon the first syllable, a sharp turn upon the last. If a lively servant girl was importuned for a kiss by a fellow she did not care about, she cocked her little nose, and cried ‘Walker!’ If a dustman asked his friend for the loan of a shilling, and his friend was either unable or unwilling to accommodate him, the probable answer he would receive was, ‘Walker!’ If a drunken man was reeling about the streets, and a boy pulled his coat-tails, or a man knocked his hat over his eyes to make fun of him, the joke was always accompanied by the same exclamation. This lasted for two or three months, and ‘Walker!’ walked off the stage, never more to be revived for the entertainment of that or any future generation.
1842		Whip & Satirist of NY & Brooklyn (NY) 12 Mar. n.p.: ‘Walker!’ said Mr Spigot.
1846		Swell’s Night Guide 61: Nix my schickster; do you see anything green about me? cos I doesn’t! its no bite my switcher, do you stag that? – walker!
1851		Bell’s Life in Sydney 28 June 3/1: [heading] It’s All Walker!
1854		Liverpool Mail 5 Aug. 5/6: Since here he come the bird’s been dumb — what they said of his jaw’s all Walker!
1866		Wild Boys of London I 37/1: ‘I’m a wisitor, ain’t I?’ ‘Then give me the pocket-book.’ ‘W-a-l-k-e-r!’ said the Dolphin, winking knowingly.
1870		Hotten Sl. Dict.
1884		‘’Arry at a Political Pic-Nic’ in Punch 11 Oct. 180/1: ‘To show his true love for the People!’ sezs one vote-of-thanking tall-talker, / And wosn’t it rude of a bloke as wos munching a bun to cry ‘Walker!’.
1891		in Punch 10 Jan.