There was a quack lawyer running a scam like this all up and down the West Coast years ago. He was targeting businesses (mostly bars) that gave "specials" and freebies to women on certain nights of the week, calling it discrimination against men.
He had a crew of guys who would patronize the business and save their receipts. Then they would sue, saying that they had to pay for food, drinks or services that women were getting for free or at discount prices. They got me for offering free pool to women on Monday night (ladies night I called it). Four guys came on on four separate occasions and paid for food and pool and saved all their receipts. They sued me for $4,000 each on all four occasions for a total of $64,000! Kind of took me off guard with this one.
I talked to my attorney who contacted the scum bag in charge and they set up an Arbitration hearing where he offered to settle for $16,000, a pretty big hit. My attorney said it would cost me $5-6,000 to fight him in court and we might win and we might lose. I opted to fight.
My attorney did his homework and made the four dupes look like fools on the stand. They couldn't remember what kind of pizza they had or on which trip they ordered it, or when they played pool and when they didn't. Then he hit the judge (it was a judge trial) with a zinger, when he introduced evidence of this lawyers scamming all over California and the West Coast, hundreds of cases that usually ended in a settlement.
It was a one day trial, and the judge deliberated for a couple of hours before coming back with his decision. He found in our favor and made the scum sucker pay all court costs. He really berated this guy in his decision. It had cost me $6,000 but it was worth it to see this guy squirm.
After this decision the guy was forced out of business, with other head judges being notified of his pattern of behavior. I told the entire story in Pool Wars.