I turn polar bears white and I'll make you cry. I make guys 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

This one came around on another site a while back, it really made me crazy for a while.

You omitted the opening, and closing though.

The closing question was, "can you solve this riddle".

The correct answer is "no". In other words, it can't be solved. It stated that 97% of Harvard Grads could not get the answer but 87% of kindergardners did. Of course, they didn't try so hard to solve the riddle, and the answer of course was "no". There is no solution to the riddle, only to the last question.

There were arguments presented that "pressure" should have been the answer but you really have to stretch that one on some of those statements.