The Worlds Hardest Riddle

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?

97% of Harvard graduates could not figure the riddle out, but 84% of kindergarten students could. And they did it in 6 minutes or less!

Are you as smart as a Kindergartener? (no fair using Google!)