How many times can someone sneeze before you stop saying "bless you?" Obviously the first time they sneeze they get a "bless you" and for the most part they do the second time is well, but what about the third time? The fourth? If someone has a sneezing fit spanning more than four sneezes is it permissible to wait until the end of it and then hit them with one big "bless you" that's to be applied evenly over all of the sneezes?
I find that most people stop after two sneezes, but why? Aren't those people sneezing incessantly more deserving of our blessing? Don't they need it more? What's the whole thing with blessing sneezers anyway? What's so unholy about sneezing? Or holy?