Green’s Dictionary of Slang

a dismissive excl.: not likely!

1888		‘’Arry at a Radical Reception’ in Punch 12 May 219/2: ‘Way oh! Tommy Trotter,’ sez I, ‘that’s a notion, old man, you may carry / When Toffdom and Gladstone join ’ands and you can make a fair juggins of ’Arry.’.
1892		‘Coming of Age’ in ‘F. Anstey’ Mr Punch’s Model Music Hall 119: Way-oh, ole matey, I don’t bear no malice, I don’t!