Green’s Dictionary of Slang

bobbery-bob! excl.

[Hind. ???????? (b?p re b?p) alas!, literally, father oh father!]

(orig. Anglo-Ind.) excl. indicating distress.

[[Ind]J.H. Stocqueler ‘The crime of colour’ in Patriotic Fund Jrnl 17 Feb. 165/2: ‘Bappree bap!’ exclaimed the Scotch lady, adopting the tone and phrase of wonderment common to the Hindoos. ‘You don’t mean it.’.
[Ind]Out of the Meshes II 273: ‘Would not your Royal Highness like to come into the next room and see the dancers?’ said the Major in great perplexity, forgetting all about the inflected verbs. / ‘No, Bobbery Bob! I’ll drink some more sherbet, old man’.
[Ind]Yule & Burnell Hobson-Jobson 76/1: Bobbery-bob!, interj. The Anglo-Indian colloquial representation of a common exclamation of Hindus when in surprise or grief – ‘B?p-re! or B?p-re B?p’ ‘O, Father!’.
[Ind]H. Compton Free Lance in a Far Land 187: ‘And that’s my reward for subjugating Umbajee’s country. Bobbery bob and bobbery bob! ’Tis a foul, cruel, ungrateful world’ [Ibid.] 270: Bobbery Bob! Bobbery Bob! There’s four feet of rusty steel and a knobby bamboo skewered through my witals.
[Ind]M.H. Beattie On the Hooghly 67: The tug was the Scinde, Captain Hand, known as ‘Bobbery Bob’ Hand.
J. Chatterjee Last Train to Innocence 183: ‘Bobbery-bob, Mrs Bagchi! I love Christmas in Cal! My bachchas don’t give me a moment’s peace!’.