Zombies Have no sense of Humor

Was at a store last evening wearing my "US Department of Zombie Defense" shirt and cap, when I heard a man cough, he looked at me and apologized. I said "that's how it starts, first a cough, then fever, then the hunger. Are you getting hungry?" He gave me a weird look, then I continued "Do you have a craving for brains?" That's when he read my shirt and begun to laugh out loud, which caused him cough even more. He gave me a hug and said, "You got me. I needed that laugh." By now the other shoppers caught on and laughed along with us. I told him he has a sense of humor. He was okay. "Remember, zombies have no sense of humor."