i dunno, stuff.

Learning to break open cans without an opener had proved much easier than Jack had thought it would be. All she'd needed was a sharp knife, which was one thing she had no shortage of. Once she had figured out how to open the multitude of cans available to her, the food problem had ceased being a problem. She was just digging her fingers into the jagged edges of a can of Campbell's Tomato Concentrate when there was a huge bang from the door. She looked up in fear; the only sounds she had heard for the past three weeks were produced by herself, aside from the occasional distant explosion. She got hurriedly to her feet just as the door banged again, shaking the entire room this time. They couldn't have found her, they couldn't, there was no way. Her hideout was secluded and secure; even if they had found her, there was no hope of them getting inside the room.
And yet her reassurances were shattered as there was yet another bang, this last one producing a dent in the door along with a deafening boom that resounded from every wall. It sounded as if something huge and very solid was hitting the door, and Jack couldn't think of what it would be. The crazies, as she had begun to call them (she still couldn't bring herself to use the word zombie, it was far too horror-movie-esque, not to mention it would be admitting this horrible reality to herself in a way that she was not yet prepared to do), were nowhere near big enough to produce the sound she was hearing, although she couldn't think of what else could be making it. They weren't smart enough to use anything like a tool, and anyway, why would they want to get in this room so badly? They couldn't know she was here; the room was smell-proof and completely sealed. There was no explanation. Unless...maybe she was saved. This idea, as soon as it had taken form, latched onto her mind and spread like the infection itself. Yes, yes, she was saved, the army had somehow defeated the crazies, and knew about this saferoom and had come to rescue her, knowing that the only way in was to destroy it.
Unfortunately, just as she began to get excited and hopeful, though deep down she knew this fantasy was far from true, she heard a terrible, inhuman yell from outside the room, from right outside the room, and with a final thunderous bang, the door flew in on itself, flying like shrapnel from a bomb and narrowly missing Jack.
Jack's heart began beating wildly and her stomach plummeted; she felt something warm running down her leg and realized she had wet herself. There was nowhere to run. This room was the only safe place left in the world, for all she knew, and now, they had found her. They weren't supposed to be smart, they weren't supposed to be strong, they weren't even supposed to know she was here, and yet, there they were, grotesque and wild and hungry; she could see thousands of them outside the door from her position in the room, the first one loping toward her even as she made this observation, and before she even had time to scream and throw her hands in front of her face in some feeble attempt at protection, they were upon her.