Another impossible riddle

When Harvard students were asked to answer this, 98 per cent of them got it wrong while 83 per cent of kindergarteners got it right

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 your pancakes brown, and I make your champagne bubble. If you squeeze me, I’ll pop. If you’ll look at me, you’ll pop. Can you guess the riddle?