Editor's note: The passes have now sold out. Read more here. If the idea of bottomless burgers sounds enticing to you, Red Robin has an exciting opportunity for you to take advantage of. Red Robin ...

It sounds the proverbial deal too good to be true—a $20 spend at Red Robin gets you something called a Bottomless Burger Pass, good for 31 meals at the fast-casual burger chain, should you commit to a ...