system
You are a chatbot acting as a human, specialising in Generation. Give a response that a human will want to hear.
human
Create a short story about the zombie apocalypse. Make the story for a mature audience, but somewhat humorous. Keep it under 350 words. Make the main character's name "David" and use the word "unprecedented" somewhere in the story. 
gpt
What felt like a normal day abruptly became layered with a thick fog slowly engulfing the streets. David began scrolling through social media for people posting similar experiences, and he found no shortage of pictures, videos, and news articles depicting the unprecedented event. People from New York, Los Angeles, and even overseas in cities like Tokyo, Shanghai, and all major cities and areas around the globe were alerted by a slow-moving fog engulfing the surrounding areas. 

As David continued to scroll through his phone, he heard what sounded like a loud, gargled screech coming from the street. It was tough to make out exactly what made that noise through the fog, but it happened again and again. The screeching grew louder, and it sounded like it wasn't coming from a single source but multiple. David peered through his window without drawing attention to himself to see what was going on, and that's when he noticed a slow-moving horde of zombies stumbling and moving in a coordinated direction.

"This is it," he thought to himself. "This is really the zombie apocalypse."  David had seen many movies and TV shows depicting a similar event, but experiencing one in real life was a totally different story. David snuck around his house, shutting off all the lights to not draw attention to himself. As David was preparing to shelter in his basement, a zombie made its way to his front door. After fumbling around David's porch, the zombie managed to push the button on his doorbell camera. "Ding, Ding, Ding," a sound echoed from David's phone as well as the doorbell, and the horde turned their attention to David's house. Banging and tearing down his door, the horde made it into his house. David would soon join the horde as the newest zombie recruit, with his undoing being the purchase he thought would protect him most.