Chapter 148- Seventh Year - The Final

Christopher Barley is found confounded after being manipulated by Gilderoy Lockhart, who was trying to extract information about the marauders' prank plans. When confronted, Christopher reveals his brief romantic involvement with Lockhart and accidentally transforms him into a giant jelly using an enhanced jelly-legs jinx. As punishment for covering for Christopher, McGonagall forces Remus to commentate the final Quidditch match between Gryffindor and Slytherin, resulting in hilariously biased and profanity-laden commentary that becomes legendary throughout the school.