1849 October, "The Green Hand--A 'Short' Yarn. Part V", in Blackwood's Edinburgh Magazine, vol. LXVI, American ed., vol. XXIX no. 4, page 440,
That 'ere talk o' yours, Harry, consarnin' dazarts and what not--why, bless me, it's all my eye,--....

1883, Anthony Trollope, Mr. Scarborough's Family, chap. 25,
"I suppose you mean to say that he has given orders that I am not to be admitted?"...
"Oh, Mr. Harry, you shouldn't ask me, as is merely a servant."
..."That's all my eye, Matthew; you know all about it as well as any one. It is so. He does not want to see me."

All my eye

Meaning

Noun