You are at home, standing by the microwave waiting for your pizza pocket when you hear a light tap on your door. You think nothing of it, you're hungry after a long day of school learning about mind altering parasites and are looking forward to turning on the xBox and destroying a bunch of noobs. Shockingly, that little tap turns into a loud repetitive bang. It's probably one of your siblings. You aren't about to stop watching the microwave to let them in. If they wanted in the home, they shouldn't have forgotten their key.
At that moment, your life changes forever. Three mindless creatures, that look like something out of a horror movie, break down your door! You hear your phone ring! It's your older sibling. You have time to grab your phone and warn them about the zombies in your house, but that would cut into your escape time through the back window. Your sibling is capable of looking after them-self, and even if they are not, this is a Darwin situation: survival of the fittest. So you grab your phone, hit the red "X," and climb out the back window. To your surprise, the street is full of Zombies! You find a hiding place in a rose bush and weigh your options. Will you survive, or will you become a zombie's pizza pocket? Yum.