Not enough giggles in your life? A team of Dutch artists might have the answer to your problem: A tickle machine. A machine made from a nylon-covered pinball operated via a computer-controlled suite of servos, motors and sensors whose entire raison d'tre is to tickle you -- to tickle you steadily and relentlessly, with more single-minded tickle focus than even the most dedicated older brother. The machine is the creation of Erwin Driessens and Maria Verstappen, artist-inventors who really like to be tickled. The partners found that they were squabbling a little too often over whose turn it was to tickle whom. "All the time we say to each other, 'No, you have to tickle me,' and when the other one stops you feel like, 'Oh, don't stop, go on,'" says Verstappen. "You don't want to ask another person to do something that he doesn't like, that's only for your pleasure, so that made us think of building a robot to tickle us." Indeed, the robot tickler will never tire of tickling you. It will tickle you until you wet your pants.