Green’s Dictionary of Slang

a euph. for fuck v. (3)

1952

M.F. Caulfield Black City 51: ‘Bucker you,’ said Flynn unpleasantly. ‘I know you. You’re a wolf running after wee schoolgirls.’ [Ibid.] 59: ‘He’s mad at you.’ ‘Ah, bucker that,’ said Flynn. ‘All editors are always mad at something.’.