Erinbb always makes fun of me when i walk outside and i sneeze and i say fucking sun. I have known for a very long time that when i look at the sun, or when i walk from a dark room outside into the sun, I will sneeze. My friends used to make fun of me back in high school. I would be walking out of the "changing room" in P.E. and i would automatically sneeze. Some people would just wait for me outside to watch me sneeze and laugh at me. I have known that it was the sun or bright lights, but i didn't know why, Until now.
I am the only one that i know who did this, but apparently happens to one-sixth to one-quarter of humans. And apparently it happens to Caucasians more than any other races. One theory is the visual nerve gets to much stimulation and makes some other nerve freak out. This is called the Photic sneeze reflex, and because i have this i can't fly combat aircraft.
Information acquired from: wikipedia.org, Direct article.