Flutterrage, also known as Flutterbitch, refers to the moment in the 'My Little Pony: Friendship is Magic' series when the normally timid and kind Fluttershy loses her temper and undergoes a radical personality shift. This transformation first gained significant internet traction following episodes like 'The Best Night Ever,' where her frustration with uncooperative animals leads to a terrifying, aggressive outburst. The meme is a staple of the Brony community and the wider internet, used to illustrate situations where someone who is typically soft-spoken finally reaches their breaking point. It highlights the humorous contrast between her gentle nature and the raw, unbridled fury she displays when pushed too far.