The worst pain known to humankind.
  1. Paper cuts
    It is a scientifically proven fact that the smaller the cut, the greater the pain.
  2. Stepping on a plug
  3. Hitting your elbow
    There is NOTHING funny about the funny bone
  4. Stubbing a toe
  5. Jalapeño eye
  6. Stepping on a Lego
    Suggested by @ouizoid
  7. Poking your eyeball with a mascara wand.
    Suggested by @nelle