text: <START_QUESTION> title: the world's hardest riddle " body: i turn polar bears white and i will make you cry. i make guys have to pee and girls comb their hair. i make celebrities look stupid and normal people look like celebrities. i turn pancakes brown and make your champagne bubble. if you squeeze me, i'll pop. if you look at me, you'll pop. can you guess the riddle? <END_QUESTION>
  <ANSWER> grease <END_ANSWER><|endoftext|>