How many libs can you lift? What's that? Don't you understand what we mean? Let future powerlifter Rains explain. On the side of all the dumbbells are the letters "LB." So obviously the correct technical term for weight is libs. Then, this baby just learned how to walk, but his puppy doesn't want him to go anywhere. Somebody should warn that puppy that he is taking quite the risk by pulling on that end of the diaper.