The state of mind reached when a usually meek, demure, and gentle person is pushed past their limits of frustration, tolerance, or anger, and lashes out in an uncharacteristic and frightening fit of untrammeled rage.
In the "My Little Pony: Friendship Is Magic" Season One episode entitled "Best Night Ever", kind-hearted pegasus-pony Fluttershy's inability to make friends with Canterlot's local fauna causes her to develop Fluttershychosis and chase the panicked animals into a gala ballroom, her gown and mane all disheveled and dirty, madly screaming, "...you're...going...to LOOOVE MEEEE!!"
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)