Wiktionary
tell it to the judge
phr. (context idiomatic English) I do not believe what you said.
Wikipedia
Tell It to the Judge
Tell It to the Judge is a 1949 romantic comedy film starring Rosalind Russell as a divorcee who tries to get back her ex-husband, played by Robert Cummings.
Usage examples of "tell it to the judge".
But why go into all that bullshit here when it's just as easy to cuff the two of you together and run you over to the Federal Building to tell it to the judge?
Tell you what -- after you tell it to the judge, maybe you can write a book about it.