Judge Judy Sues P.I. Lawyer -- You Have 'Stupid' on Your Forehead ... Stupid

Judge Judy has filed her first lawsuit EVER -- seriously -- against a guy who is shamelessly using her image to chase personal injury clients.

The TV jurist is outraged John Haymond -- a P.I. lawyer in Hartford, CT. -- used clips from "Judge Judy" along with clips of him and his daughters to drum up business.

Judy is especially pissed because she says she's never endorsed a product or the services of anyone ... to maintain her independent reputation.

She says, "Without seeking my authorization or consent, Mr. Haymond has taken that choice away from me for his own personal gain. I cannot tolerate that, and intend to hold Mr. Haymond financially responsible for his actions."

Judy scolds the barrister, saying, "Mr. Haymond is a lawyer and should know better."

We looked for the ads and, just like the litigants who appear on her show, it appears Judy scared the crap out of Haymond because they are nowhere to be found.

Herhonner is suing for more than $75K in damages ... or in Judy's world, lunch money.