I've never had the Taco John's birthday freebie before, but if they're as delicious as they are hard to spell, I'm excited.
FYI, Taco John's moved their free birthday food offer to their app-only a few years ago. If you were previously getting your Taco John's free dessert offer by email, you may have noticed it stopped showing up in your inbox years ago. But it didn't end! You simply need to access your account via the app and it'll transfer your info over.
If you're new and signing up now, there's no field to enter your birthday online. However, via their app, you can enter your birthday under “Profile” and trigger their freebie!