The Bully Ending is an infamous ending of the non-infamous episode, The Bully.
Why You Should Kick This Scene's Butt.[]
The episode was already bad enough with Mrs. Puff being oblivious as she doesn't understand that Spongebob is being bullied, calling Flats SpongeBob's Friend, breaking the promise to not tell anyone else and her telling SpongeBob that Flats wants to be his friend when it's anything but, and the ending makes the episode bad even further with Mrs. Puff seeing Flats lying on the ground, making her think that Spongebob beat him up in which he really didn't. She also threatened to kick SpongeBob's butt which contradicts the line "There shall be no butt-kicking in any class of mine!" also it ends there, what a way to end an episode (Sarcasm).
The Only Redeeming Qualities[]
Comedically, it does come off as silly for others because out in of nowhere, Mrs. Puff to just say that line out of context. Unfortunately not everyone is bond of this. Also, Ms. Puff would most likely go through what Flats did (passing out after failing to beat him up).