 Meanwhile , at the summer camp , young bully Nathan and his lackey Mimsy plot to destroy Jimmy during the athletic competitions so Nathan can be declared the camp 's champion . This sub @-@ plot is also narrated in the same style as " Intervention " . Nathan uses Mimsy as a minion to carry out his plans to harm Jimmy , but is repeatedly foiled by Mimsy , who either misinterprets his instructions or takes them too literally and causes his plans to backfire . Nathan tries to plant a black mamba in Jimmy 's canoe during a race , but Mimsy instead leaves it in Nathan 's canoe ( when told to put it " in the canoe " ) . Subsequently , Nathan tries to lead Jimmy 's team into dangerous Indian territory during a scavenger hunt , but instead Mimsy switches the maps and switches them again ( Nathan demanded him to " Switch the maps ! Switch the maps ! " ) , and leads Nathan 's team there . When Nathan tries to use a whistle with a shark mating call against Jimmy , Mimsy , who was supposed to blow the whistle underwater , instead swims in the water briefly then blows the whistle on land and a shark jumps out of the water and anally rapes Nathan with its nine @-@ inch long penis , according to the Colorado National Wildlife Association . During the talent show , Nathan rigs Jimmy 's ukulele with C @-@ 4 , hoping it will explode during a solo , but when Jimmy cannot perform the solo correctly , Mimsy starts to show Jimmy the correct notes . Nathan interrupts and confronts Mimsy about his failure to follow orders . With a lapse of judgment , Nathan plays the correct notes and causes the ukulele to explode , knocking him away before being further injured by his past plans attacking him again . The ukulele solo is spoofing the Looney Tunes repeated use of the Xylophone gag , where the last note of Believe Me If All Those Endearing Young Charms , is booby trapped , but the protagonist always somehow manages to play it wrong . Nathan is subsequently escorted to an ambulance , but is given the champion 's crown by Jimmy . Nathan tells Jimmy he hates him anyway before he is sent away to the hospital . 
