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 champane bubble.   If you sqeeze me, I'll pop.   If you look at me, you'll pop.   Can you guess the riddle?
choices.label: A B C D E
choices.text: poor people machine dust cars grease