You know you've just finished an MHI book...

... when you walk into WalMart, and think, "Hmm. When the zombies come, I can scramble up the display case over there and follow the air vent from the bakery up into the rafters. Maybe make my way back to sporting goods and grab a shotgun. No, there's probably no way up into the rafters back there - so, shotgun first, then back to the bakery. Oooh, and there's even a skylight to the roof if things get nasty! OK, I can shop now."