Address Service Requested: Genre Undetermined

"Address service requested," it said. He flipped it over. It was blank. It wasn't even addressed to anybody. That didn't make any sense; how could you have address service requested when you didn't have an address to correct. By default, it must be at the right address. He frowned. Or the wrong one, as almost all junk mail seemed to be. He flipped the card between his fingers again. Still, just a blank postcard, with a single stamp and that "Address service requested". He squinted at the stamp. He hadn't seen one like it before.

Inspiration: I'll give you one guess.
Story Potential: Low.
Notes: It's a catchy-ish opener, but it reeks of Harry Potter, and besides, the story itself could be anything. At all.