it's a fair cop1 ADMIT British EnglishBrE spoken used humorously when someone has discovered that you have done something wrong and you want to admit it 抓得好〔幽默用法，犯错被人发现时用于承认〕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 cop at cop1(2)
2 British EnglishBrE used humorously to admit that you should not be doing something that someone has caught you doing 这是罪有应得，活该被抓个正着〔幽默说法，表示承认不应该做某事〕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?
→ it’s a fair cop at fair1(SPOKEN SECT)