
In and Out Burger only has about six items on it's menu (hamburger, cheeseburger, Double Double, fries, soda, shake), but it also has a secret menu. A menu so mind-bogglingly classified that the only possible place to hide it is... on the company's official website. Most of the items on this menu look like they were created by someone with way too much time on their hands, and have only ever been ordered for the novelty.
The next time you find yourself at an In and Out Burger, you might not find these items on the official menu, but give the guy at the register a wink and nod (because they never get sick of that), and you could walk away with...
The X by Y Burger

You can have two slices of meat and one slice of cheese, you can have six slices of meat and six slices of cheese, you can even have 100 slices of meat and collapse to the floor! While the official In and Out policy is not to exceed a 4 by 4, you can find some locations that will do more than that.
Animal Fries

Despite looking like a smelly pile of vomit, Animal Fries are arguably the most famous item of the secret menu, and have been described as tasting "totally delicious, dude." They are made by layering cheese, diced onions and thousand island dressing on top of french fries, then praying that the customer will eat them without looking at it for too long.
Protein Style Burger

A regular hamburger, with lettuce instead of a bun! This burger was originally designed for people on the Atkins diet, and for that alone it is stupid.
The Flying Dutchman

This burger, which really has nothing to do with sailing, is served without vegetables or a bun. It's like somebody went out of their way to make the above item more stupid.
The Wish Burger

(the one in the back left corner)
Have you ever ordered a hamburger, only to find that those fuckers behind the counter put meat in it again? Well with In and Out's Wish Burger (sometimes called a veggie burger), that's a thing of the past! Order one of these, and all you'll be served is a bun, stuffed with tomato and lettuce.
The Big Mac

This up and coming In and Out secret menu item is made with two all beef patties, special sauce, lettuce... actually, we're pretty sure there was some mistake here.
In and Out Burger is the most culturally significant burger joint in the history of fast food. Seriously. In and Out is what happens when the MacArthur Foundation gives Quentin Tarantino a genius grant to design a restaurant. Except that In and Out Burger is better, because Quentin Tarantino is a filmmaker and that would be dumb.

It's like having an Easter egg hunt built into your fast food!

X marks the triple bypass.

Give her a bit of the the ole' in out, in out. Not like the burgers though. That'd be gross.
Cracked Talk on | In And Out Burger
HAHA! POT SMOKERS LOVE FAST FOOD! lololololol. How original and clever and high-larious of you!
On a side note, is it just me or do the Topics page for fast food related subjects all sound kind of preachy. This one is basically an ad for IaO Burger and the McDonald's page sounds like it was written by PETA.