Green’s Dictionary of Slang

my winky! excl.

a mild excl.

1880		‘’Arry’s Christmas in the Country’ in Punch 25 Dec. in P. Marks (2006) 29: Then church-decorating! My winky!
1882		Cheshire Obs. 23 Sept. 3/4: If I’d had a thousant to four, My winky, how I would have collared the stuff!
1893		‘’Arriet on Labour’ in Punch 26 Aug. 88/2: If Votes sets women by the ears, as they does men, my winky!