There was a fanfic which posited that Luna was trapped in her own nightmare of becoming the thing she feared most.
I like to think that she did it to herself, and whatever dart arts her jealousy drove her to invoke to gain power removed her remorse and/or empathy for those she was harming. When the Elements purged her of those powers, the gravity of what she did finally dawned on her.
Wait, is ponyfeathers meant to be some sort of euphemism?
@absol I've heard people say horsefeathers before, so I guess it's just the pony equivalent.
If you stare into the abyss long enough, it stares into you.
Element of Indecision.
@Kuroi: I am of the same mind. WE ARE IDEA TWINS.
Ever since I read that fanfic Eternal, I suscribe to the fanon that Nightmare Moon is a manifestation of Luna's worst fears made real.
Clearly the MLP Fandom loves to read given the amount of FUCKING AWESOME fanfiction there is out there.
@marston You can't assume that curse words have anywhere near the same origins that they do in our world, especially since this one is entirely context based rather than the word itself being offensive.