You can actually do this glitch in any corner, the one next to the thompson is good because then u can keep buying thompsons without moving. However after a while if a LOT of zombies come around you you will get hurt and killed so you wont get too far BUT if you crouch they wont be able to get to you. You can, once your inside eachother, move slowly with eachother anywhere around the house and not get hurt! Which is cool because you can go in the middle of the room or wonder around getting weapons while being invincible. And im not sure about this but i think you can get 3 or 4 people inside eachother which would be easier to drive away zombies.