You can lead a cow upstairs but not downstairs. It's physically impossible for a pig to look up into the sky. There are 293 ways to make change out of a dollar. All polar bears are left-handed. George Washington is the only man whose birthday is a legal holliday Cats' urine glows under a black light. For every 230 cars made, 1 gets stolen. Palindromes are words spelled the same backward + forward.