From Longman Dictionary of Contemporary Englishit’s a fair copit’s a fair copADMIT British English spoken used humorously when someone has discovered that you have done something wrong and you want to admit it → cop
Examples from the Corpus
it’s a fair cop• It's a fair cop - honest, officer!• And criminals are warned that from then, they won't even have time to tell police it's a fair cop.• Do you want me to say that it's a fair cop or something?it’s a fair copit’s a fair copBritish English used humorously to admit that you should not be doing something that someone has caught you doing → fairExamples from the Corpus
it’s a fair cop• And criminals are warned that from then, they won't even have time to tell police it's a fair cop.• It's a fair cop - honest, officer!• Do you want me to say that it's a fair cop or something? 