 Lisa conducts further research about Jebediah Springfield , and finds out that he once lost his tongue to a Turk in a <unk> fight and had it replaced with a prosthetic silver tongue . The town , including Marge , does not agree with Lisa 's revelations , resulting in an " F " on a report about Springfield while Ms. Hoover deems her to be a " PC Thug . " Homer believes her , and sympathizes with her story , claiming he 's been called a " greasy thug " too . However , when Lisa attempts to show the town historian Horace Hurlbut the confession , he dismisses it as an obvious forgery , and when she presses him , he bans her and her descendants from the museum for three months . Lisa tries to convince the town her claims are true , but is met with outright hostility everywhere . However , she convinces the municipal government to disinter Mr. Springfield 's body to search for evidence of a legendary silver tongue . Despite Lisa 's suspicions , when they open the coffin , the skeleton possesses no silver tongue . Lisa is forced into admitting she was wrong and Mayor Quimby strips Homer of the role of town crier and <unk> it to Flanders . 
