"Where's Chronic?" said Barry, looking around.
  "So you're a time traveler, huh?" asked Doug.
  Barry's jaw dropped.
  "And you know this how?"
  "Here, postage stamps. Lick and stick," Doug held out a much-licked sticker on a dirty finger.
  Barry took a look at the stamp dedicated to The Age of CDs." A second stamp offered a cartoon picture of a fish tank.
  "Lick it!"