Related:

• To remove dust from the eye, pull the eye down over the nose.
  -- Actual excerpt from student science exam papers....
• Blood flows down one leg and up the other.
• Parallel lines never meet, unless you bend one or both of them.
  -- Actual excerpt from student science exam papers....
• Artificial insemination is when the farmer does it to the cow instead of the bull.
  -- Actual excerpt from student science exam papers....
• One of the major functions of skin is to keep people who look at you from throwing up.
  Actual exam answe...
• The agreement of so many kinds of animals in a certain common structure
  which seems to be fundamental not only in their skeletons, but also in the arrangement of the other parts - so that a wonderfully simple typical form, by the shortening and lengthening of some parts, and by the suppression and development of others, might be able to produce an immense variety of species - allows a ray of hope, however faint, to enter our minds, that here perhaps some result may be obtained, by the application of the principle of the mechanism of nature (without which there can be no natural science in general)....
• Rachel: What? It's true, my right leg is two inches shorter.
  Dr. Green: Come on! You're just titling! [to Ross] Her legs are fine!...