How to get a free Farmer Boys cheeseburger on Thursday, May 28

Farmer Boy is planning to give away 2,000 Big Cheese burgers to its loyalty club members on Thursday, May 28.
The occasion is National Hamburger Day.
The first 2,000 guests who make a purchase and scan their receipts using Farmer Boys’ Very Important Farmer app will receive an offer for a free Big Cheese burger for their next visit, according to a news release from the Riverside-based fast casual chain.
The Big Cheese has a single beef patty, lettuce, pickle, onion, tomato and thousand isl