From 11.30 a.m., while supplies last, you can snag a RubyBurger and fries for just $2.70. The Shake Shack at Crystal Cove and Ruby's outlets at sporting venues and LAX aren't participating in the event.
The deal is in honor of Ruby Cavanaugh, whose son founded the diner chain in her name. She turns another year older on the 27th, although when I asked exactly how old she'd be, I was told: "a lady never reveals her age".
Too true... I'm guessing she turned 21 quite some time ago, but in any case, thanks for the bargain, and happy birthday!