Related:

• Send $20 and I will double your IQ or no money back.
• Gary Larson for President!
• Birds of prey know they're cool. -- Gary Larson, The Far Side
• Satisfaction guaranteed or your money back.
• The safest way to double your money is to fold it over once and put it in your pocket.
  -- Kin Hubbard...
• 'Satisfaction Guaranteed or double your trash back.' -- Seen on the back of a Denver garbage truck
• A cat killer? Is that a face of a cat killer? Cat CHASER, maybe.
  But hey -- who isn't?" -- The Far Side, by Gary Larso...
• By the time they had diminished from 50 to 8, the other dwarves began to suspect 'Hungry' .
  .." -- Gary Larson, "The Far Side...
• Notice all the computations, theoretical scribblings, and lab equipment, Norm.
  ... Yes, curiosity killed these cats. -- Gary Larson, "The Far Side...