So, I made my first stop at In-N-Out Burger today and I'm confused. The menu was very limited -- burger, cheeseburger, double cheeseburger, fries and shakes. That's it. But I saw some people with items that were not on the menu -- chili cheese fries.
Are there other items that are only available if you are in the know? Specifically, I had a hankering for onion rings.
Also, it seemed like there was some lingo that regulars were using. Any insight?