From Longman Dictionary of Contemporary Englishyou can’t have it both waysyou can’t have it both waysCHOOSEused to say that you cannot have the advantages from both of two different possible decisions or actions It’s a choice between the time and the money – you can’t have it both ways! → way
Examples from the Corpus
you can’t have it both ways• It's either me or her. You can't have it both ways! 