ATTENTION SPACE CADETS---sign on for an interplanetary laugh-a-thon! For Venusians, Plutonians, or Earthlings, here's a collection of jokes and riddles to send you on a rib-tickling, meteoric ride. From tales of robot romance, to a trip to Mickey Mouse's favorite planet (Pluto, of course), from Earthbound jokes to starstruck silliness, readers will find enough laughs to blast them out of this world and back again.