The answer is the heat and the ultraviolet rays of the sun
according to wikipedia.com "The individual hairs are transparent and unpigmented (like a single water drop in a cloud). The fur appears white rather than transparent for the same reasons as clouds, water foam, and cotton (reflection and dispersion of visible light). The fur absorbs ultraviolet light. The coat does however insulate the bears to the point where they overheat at temperatures above 10C (50F) and are nearly invisible in the infrared; only their breath and muzzles can be seen [9]."
when most people look at the sun it hurts their eyes because of the ultraviolet light. "High intensities of UVB light are hazardous to the eyes." that is why your eyes water after looking at the sun for extended periods of time.
as for guys peeing when most people get warm they have to pee and girls combing their hair, most people go out more when its sunny and they want to look good.
celebrities looking stupid could be them being over sunned because they already tan themselves. but normal people lot like celebrities because they can't afford to take the tan over board.
pancakes turn brown because the flour and eggs in them turn brown as heat is added.
champagne pops because when warm carbon dioxide is in a pressurized gaseous form and that pressure pushes on the cork causing it to pop.
when heat is squeezed (like when you cook something in tupperware with out opening the container) it pops because the molecules move faster, boucing off each other and heat creates pressure that makes things pop open.
if you star into the sun too long the heat and the ultraviolet rays of the sun will damage your eyes and can cause them to "pop" blood vessels.
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.
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