This is a purely defensive fart. When another person in the general vicinity launches a stink rocket towards your person the only defense available outside of running away like a little girl being chased by a candy van is to deploy a blockade fart with the hope the it will keep the invading stench from roasting your sinuses.
My buddy dropped a pickled egg surprise. Thankfully I had a blockade fart to protect my perimeter or I would have clawed my nose off
by Slartifartfast December 22, 2017