Walk the way they walk: dragging your right foot, to simulate tendons that have rotted away; hanging your head, to give the impression of a neck no longer strong enough to hold it erect; recognizing obstructions only when you're in imminent danger of colliding with them. And though the sights before you comprise an entire catalogue of horrors, don't ever react.
Only the Living react.
This was the hardest rule for you to get down pat, because part of you, buried deep in the places that still belong to you and you alone, has been screaming continuously since the night you first saw a walking corpse rip the entrails from the flesh of the Living. That part wants to make itself heard. But that's the part which will get you killed. Don't let it have its voice.
Don't be surprised if you turn a corner, and almost trip over a limbless zombie inching its way up the street on its belly. Don't be horrified if you see a Living person trapped by a mob of them, about to be torn to pieces by them. Don't gag if one of the Dead brushes up against you, pressing its maggot-infested face up close against your own.
Remember: Zombies don't react to things like that. Zombies
Now find a supermarket that still has stuff on the shelves. You can if you look hard enough; the Dead arrived too quickly for the Living to loot everything there was. Pick three or four cans off the shelves, cut them open, and eat whatever you find inside. Don't care whether they're soup, meat, vegetables, or dog food. Eat robotically, tasting nothing, registering nothing but the moment when you're full. Someday, picking a can at random, you may drink some drain cleaner or eat some rat poison. Chance alone will decide when that happens. But it won't matter when it does. Your existence won't change a bit. You'll just convulse, fall over, lie still a while, and then get up, magically transformed into one of the zombies you've pretended to be for so long. No fuss, no muss. You won't even have any reason to notice it when it happens. Maybe it's already happened.
After lunch, spot one of the town's few other Living people shuffling listlessly down the center of the street.
You know this one well. When you were still thinking in words you called her Suzie. She's dressed in clothes so old they're rotting off her back. Her hair is the color of dirty straw, and hideously matted from weeks, maybe months of neglect. Her most striking features are her sunken cheekbones and the dark circles under her gray unseeing eyes. Even so, you've always been able to tell that she must have been remarkably pretty, once.
Back when you were still trying to fight The Bastards—they were never "zombies" to you, back then; to you they were always The Bastards—you came very close to shooting Suzie's brains out before you realized that she was warm, and breathing, and alive. You saw that though she was just barely aware enough to scrounge the food and shelter that
She taught you it was possible to pass for Dead.
She's never spoken a word to you, never smiled at you, never once greeted you with anything that even remotely resembled human feeling. But in the new world she's the closest thing you have to a lover. And as you instinctively cross the street to catch her, you should take some dim, distant form of comfort in the way she's also changed direction to meet you.
Remember, though: she's not really a lover. Not in the proper emotional sense of the word. The Dead hate love even more than they hate Thought. Only the Living love. But it's quite safe to fuck, and as long as you're here the two of you can fuck quite openly. Just like the Dead themselves do.
Of course, it's different with them. The necessary equipment is the first thing that rots away. But instinct keeps prodding them to try. Whenever some random cue rekindles the urge, they pick partners, and rub against each other in a clumsy, listless parody of sex that sometimes continues until both partners have been scraped into piles of carrion powder. The ultimate dry hump.
So feel no fear. It doesn't attract their attention when you and Suzie grab each other and go for a quickie in the middle of the street: to knead your hands against the novelty of warm skin, to smell stale sweat instead of the open grave, to take a rest from the horror that the world has become. Especially since, though you both do what you have to do, following all the mechanics of the act, neither one of you feels a damn thing. No affection, no pleasure, and certainly no joy.
That would be too dangerous.
Do what you have to do. Do it quickly. And then take your leave of each other. Exchange no kisses, no goodbyes, no cute terms of endearment, no acknowledgement that your tryst was anything but a collision between two strangers walking in opposite directions. Just stagger away without looking back. Maybe you'll see each other again. Maybe not. It really doesn't matter either way.