A person who sneezes and attempts to block the sneeze and the pressure caused by this blocking makes the person in question fart
Thomas Johnston is a Sneeze Fart
by Marchetti May 03, 2009
The rare but priceless occasion where a persons sneeze causes an unexpected fart, usually in an embarassing situation.
Did that mother fucker really just sneeze fart?
by Blitzkriego October 09, 2008