When I worked in the Big City, I used to worry that some visiting relative from a small town would act like a rube and embarrass me in front of the fast crowd of world-weary sophisticates I was hanging out with. At any moment, someone in my small-town family might blurt out something corny that my friends would think was hysterically funny -- and then they'd remind me for weeks that Cousin Joe actually thought subways were scary and restaurants were expensive.It never occurred to me my friends must have had relatives, too, and that I had never met them. It was almost as if they were hiding them from me!