it's a fair cop

Meaning

1. used by sb who is caught doing sth wrong, to say that they admit that they are wrong

In the movies · 1

• To be fair, even the cops couldn't come up with an excuse that fucking dumbass.Baby Driver2017

From the same entry

• all's fair in love and war
• be fair
• by fair means or foul
• a fair crack of the whip
• fair enough
• fair's fair
• a fair hearing
• a fair shake
• your fair share of
• fair to middling
• fair and square
• set fair