(All) my eye and Betty Martin!
The strange exclamation in the title means “Fiddlesticks! Humbug! Nonsense!” Many people will recognize the phrase (for, among others, Dickens and Agatha Christie used it), but today hardly anyone requires Betty Martin’s help for giving vent to indignant amazement. However, the Internet is abuzz with questions about the origin of the idiom, guarded explanations, and readers’ comments.