you don't expect (one) to believe (something)

you don't expect (one) to believe (something)

What you are saying is absolutely ridiculous or wholly unbelievable, and there is no way one will believe it. Try giving a more straightforward excuse as to why you can't come into work today. You don't expect your boss to believe such a bizarre story. A: "I finished my homework, mowed the lawn, did the dishes, and cleaned my room! Now can I go and play with Tommy and Bill?" B: "You did all that in the span of an hour? Ha! You don't really expect me to believe that, do you?"
See also: believe, expect
Farlex Dictionary of Idioms.
See also:
  • you can't expect (one) to believe (something)
  • You can't expect me to believe that
  • you wouldn't read about it
  • come again
  • come again?
  • cockamamie
  • GMAB
  • shoot straight
  • shoot square
  • I can't believe it/that/this