"accidentally" dropping a Ton Tongue Toffee – Dudley, a glutton on a forced diet, soon has a four-foot-long tongue protruding from his mouth. At the Quidditch World Cup they impress Ludo Bagman, Head of the Department of Magical Games and Sports at the Ministry of Magic, with their fake wands. Their ambition in life has always been to run their own joke shop. Harry makes this possible by giving them his winnings from the Triwizard Tournament. The pair provide Harry with useful assistance throughout the series; in Harry Potter and the Chamber of Secrets they and Ron help him escape his house arrest at Privet Drive. In Harry Potter and the Prisoner of Azkaban they give him the Marauder's Map. In Goblet of Fire, they try to encourage Harry and Ron to find dates to the Yule Ball by letting them see Fred ask Angelina Johnson. They also help Harry in Order of the Phoenix when Harry wishes to talk with his godfather, Sirius Black, by creating a distraction, leaving Hogwarts in a state of chaos. They were also members of Dumbledore's Army, a group started by Harry, Ron, and Hermione to teach practical instruction in Defence Against the Dark Arts, which Umbridge had removed from that course's curriculum. Later that year, they are banned from Quidditch and decide to abandon formal education; before leaving, though, they pay tribute to Dumbledore by waging a prank war against the dictatorial Dolores Umbridge. Threatened with flogging for conjuring a swamp in a corridor, they depart on broomsticks, yelling to Peeves in the process, "Give her hell from us, Peeves." It is stated by several characters, including Professor Flitwick and Hermione, that despite their poor grades and meager number of O.W.L.s, the Weasley twins are extremely proficient wizards, capable of sophisticated magic (such as spells for high-quality daydreams). This is evidenced by the large number of inventions they have created and by Fred's ability to transform Ron's teddy bear into a spider even before he was old enough to attend Hogwarts. After Hogwarts As they leave, the twins inform their fellow students of their new shop in Diagon Alley and offer discounts to students who will likewise harass Umbridge. The swamp, meanwhile, remains for some time, since Umbridge is unable to remove it and no other teacher particularly wishes to. After Professor Umbridge is driven from the school, Professor Flitwick removes it, but