How do you identify with a stranger and make sure they have similar interests as you? A good place to start is their Tshirt. A Tshirt is like a badge saying "hey look what I'm into" and there has been a massive surge in those wearing Zombie tshirts. Good to know if your ever wondering around post apocalypse wondering who might be clued up and useful.
Nobody can have too many T shirts and its a great gift to give to anyone who is interested in Horror.