Haven't you heard of the tale? The one that happened before Equestria was safe and sound? There once was a little filly.... broke her horn, lost her pony pals, and made revenge sound less sweet.
This filly turned into a 'big bowl of sweet, cold revenge' referred to a saying that Pinkie Pie uses, but with more ice cream. Like they say, revenge is best in a dish served cold.
This is a story about the time..when chaos roamed.
*Thanks to the original story of Cupcakes and for 'blueskies' to have his OC become Ying's gory apprentice*