Dawn the Dinosaur says to Dilbert, "Let's make a deal. You let us continue hiding in your house, and Bob won't hungrily devour you." Dilbert replies, "That's fair." Dilbert continues, "But I'm puzzled . . . I know that Dawn can avoid being seen because she is a Nobodysaurus, but how on earth did Bob go unnoticed all this time?" Bob points to his sneakers and says, "Tennies." Dawn says, "Old dinosaur trick."