i feel the most important question about sneezing hasn’t been answered. i’ve wondered this as a kid, and i think i have also seen it in calvin and hobbes:
if you block your mouth and nose so that the air can’t come out just before you sneeze, what will happen?
Welcome to the Straight Dope Message Boards, Jackson. It’s helpful to other readers if you provide the link to what you’re commenting on. This was obviously in response to the Staff Report about saying “God Bless you”.
But in fact, the question you pose was answered in an earlier column by Cecil his own self:
Will suppressing a sneeze give you a brain aneurysm?
[Edited by C K Dexter Haven on 10-01-2001 at 05:10 PM]
ah, cheers. no popping then 
There were even comments posted about it, too.