MY EYE!
Meaning of MY EYE! in English
( BrE , old-fashioned , informal ) used to show that you do not believe sb/sth :
'It's an antique.' 'An antique, my eye!'
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005