Definition of in a pig's eye in English:

in a pig's eye

phrase

North american
informal
  • Expressing scornful disbelief at a statement.

    ‘‘Under other circumstances, I think we could have been friends.’ ‘In a pig's eye,’ Susan thought’
    • ‘The down-home narrative is folksy and fun to read aloud, particularly Granny's refrain, "In a pig's eye! My, oh, my!"’
    • ‘In a pig's eye is rhyming slang for lie, and usually means Nonsense!’