a bit rich
a bit richINFORMAL
If you say that someone's criticism is a bit rich, you mean that they themselves are guilty of the same fault. Gil says that women can't keep secrets. That's a bit rich, coming from him.
a bit richused to refer to something that causes ironic amusement or indignation.
1998 Times It is also a bit rich for Mr Hames to reprove Buckingham Palace for its ‘new, slick, emphasis on presentation’, while speaking for the organisation that invented ‘rebranding Britain’.