There's been a lot of stupidity lately in dealing with the undead. Perhaps too much time has past since the catastrophe that people have forgotten how to handle themselves.
Don't taunt a zombie! They don't get it, you look like a fool and you'll probably wind up a zed yourself. Leave it to the professionals.
Fat zombies, ugh! That brings back some unpleasant memories. They might be slower moving, but when they get a head of steam going, they can barrel through all but the strongest barriers. I had a particularly nasty encounter in a dark hall way in which the freaking thing, though finally killed, still blocked my exit. I still have nightmares about that.