Chapter 19 of Less Wrong's Harry Potter & The Methods of Rationality.[link]
Professor Quirell giving Harry a lesson of how to lose by literally losing from several fifth year Slytherins(=being bullied). Note that Proffesor Quirell is Voldemort in disguise and he is EVIL, and Harry is weird enough to accept the lesson. Harry enduring all the abuse till the end. Then he got standing ovation from his classmates. For being brave to face his weakness.
* Sorry, I cannot make the picture of students standing on their desk because of limited space in the panel.