After a month in LA, I honestly felt like I was starting to see things. American fast food suffers from an identical crisis. Burger joints, juice bars, coffee shops - it's an endless parade of franchise repetition. But after I complained one too many times, I was pulled aside and informed in a hushed tones that I had it all wrong. 'You just need to know about the secret menus', said my friend. And she was right. I did need to know. Because even the most boring of brands, it turns out, have a back door.

Sameness is an inevitable consequence of capitalism. You might start life running a ultra hip underground Korean Taco truck in West Hollywood that plays accoustic K-pop remixes of the Beach Boys - but fifty trucks later, you will quickly swap unique and cool, for mass and market. But as I discovered, whether by accident or design, certain franchise brands seem to have evolved a secret language of signs and symbols known only to the select consumerati.

Here are a few examples:

- In-N-Out Burger has a very simple official menu, but a wide variety of unofficial ordering phrases. Ordering your burger "Animal Style" will grant you secret sauce and grilled onions, a "Flying Dutchman" is a burger with no bread or lettuce while "Protein Style" is a burger wrapped in lettuce instead of a bun. You can also upsize yourself by asking for a 3x3 or 4x4 (multiplies the meat and cheese). And even more bizarrely, there are small codes on the wrappers of most items. Look closely at the paper surrounding your cheeseburger and you will find the numbers 3:20, which equate to a Bible passage in Revelations: "Behold, I stand at the door, and knock: if any man hears my voice, and open the door, I will come in to him, and will dine with him, and he with Me." God loves burgers too, it seems.

- Jamba Juice has an entire secret menu of unhealthy and rather inappropriately named smoothies including the 'Dirty Orgasm' and 'Hello Jesus'.

- Starbucks will serve you something called a 'Red Eye' which is a cup of coffee with a shot of expresso dumped in it. They also keep tiny cups under the counter which they don't advertise. Ask for a 'short' latte and you will discover the joys of more coffee, less milk. And for the real franchise fanatics, you can memorise the specific order of options used by Starbucks baristas when they yell at each other. Here's the options order: hot or iced, size, drink style, wet or dry, strength, milk style, and any final directions (extra hot, no foam, light ice).

Building secrets into brands reminds me of the art of hiding 'Easter Eggs' in games and movies. Programmers would often leave amusing pranks inside video games or software applications for those that knew how to find them. Early versions of Microsoft Office had hidden flight simulator and pinball games, and if you typed 'make love' into some Unix Operating Systems, the computer would reply 'not war?'. And according to legend, the original laser disc version of 'Who Framed Roger Rabbit?' not only had naked stills of Jessica Rabbit, but the then CEO Michael Eisner's home phone number scrawled on a Toontown restroom wall.

All of this may seem a bit odd, but I think that more brands should have 'Easter Eggs' hidden within them. They provide a lenticular quality. From one side - consumers will see the mass market product - which you need in order to present a simple and consistent message to the world. But look slightly askew, and your true evangelists will have access to their own private world of special products, ordering styles, personalisation and brand mythology. And having been initiated into your secret society, you can be sure that they will be more likely to spread the word and do your marketing for you.

Of course, like any game of Chinese Whispers, things can get a little lost in translation. Think of the unfortunate Filipino man in the queue in front of me, who confident in his new In-N-Out Burger Jedi ordering skills, demanded loudly that he would like a 'Double, double... doggy style'.