Have you tried the “Monkey Style” burger yet? And no, I don’t mean Animal Style.
In-N-Out was California's first drive-through hamburger stand.
The first In-N-Out opened in 1948 and featured a two-way speaker system for customers to order their food.
Flickr: brianwallace / Via Creative Commons
As part of In-N-Out's not-so-secret menu, you can order any combination of meat plus cheese up to a 4x4.
So, in other words, if you want to order four patties with four slices of cheese, you'd ask for a 4×4. Or three patties with four slices of cheese would be a 3×4. It's all in your lucky hands!
A customer in Las Vegas once ordered a 100x100, which is when the 4x4 max rule came into effect.
That's 100 patties, and 100 slices of cheese, folks.
There's a LEGIT secret menu that is super off-off-menu.
Some of the items you can order include:
•Side of pre-packaged yellow chilies
•Root beer float
•Ground beef and bacon fries
•Bun doughnuts
•A "Monkey Style" burger
•You can add pepperoncinis to your burger.
