Red Robin giving away free burgers, but there's a catch!

How about some free lunch?

Red Robin is offering up a free chicken burger today only... but there's a catch.

You have to share a name with Santa.

The restaurant chain will give away the burgers to anyone who shares a derivative of Santa's name. That includes Christopher, Christine, Nicole, and Nicholas.

The offer is in honor of their #NameThatChicken burger contest, inviting people to come up with a name for their new chicken burger. The winner will get free burgers for a year.

According to Red Robin's website, the offer is good at restaurants nationwide, but patrons do have to prove their identity with a photo ID.

Get your grub on, Chris and Nicole!