Ogres, a vile race. Large, brutish, and not terribly smart either. Every once in a while an Ogre will wander onto pony land, most of the time they just wander elsewhere eventually. This time however, an Ogre gets a little too close for Applejack's liking, so she goes out to confront it.
Based entirely off of a skit from OneyPlays.
With the exception of the shotgun this could be an episode concept or a comic issue, with a bit more of AJ employing diffrent traps and improvised weapons to drive off the Ogre.