If I can dare to offer a serious suggestion (on what, obviously, isn't meant to be 'serious' thread):
If you ever find yourself about to sneeze when it's really important that your vision shouldn't be disrupted (even momentarily), such as when changing lanes on the M25 in the rush hour, simply close one eye. Then, when you sneeze, you'll be able to keep the other eye open, so that you can still see where you're going. As a hay fever sufferer, who's done plenty of driving jobs, I can assure that it really does work!