99% of Harvard students couldn't figure this out, but 87% of kindergardeners could in 6 minutes or less.I turn polar bears whiteand I will make you cry.I make guys have to peeand girls comb their hair.I make celebrities look stupidand normal people look like celebrities.I turn pancakes brownand make your champane bubble.If you sqeeze me, I'll pop.If you look at me, you'll pop.What am I?