Episode - 3F13\\
First Aired - 2/18/1996

On the days before Springfield's Founders' Day, Lisa discovers that Jebediah Springfield was actually a pirate who tried to murder UsefulNotes/GeorgeWashington and changed his name to dodge authorities, but no one (not even her own mother) wants to hear the truth -- except for Homer, who risks his role as town crier for the Founders' Day parade to help his daughter.

!! Tropes:
* AdBreakDoubleTake: [[https://frinkiac.com/gif/S07E16/873472/879311/ The exhumation of Jebediah Springfield's coffin.]]
* AssassinOutclassin: Sprungfeld tried to assassinate George Washington, only to get his ass handed to him.
* BeenThereShapedHistory: Hans Sprungfeld tried to assassinate Washington while he was posing for the famous portrait by Gilbert Stuart; he failed, but escaped, ripping a small piece off the painting, explaining the "unfinished" segment.
* CallBack: Sprungfeld's confession mentions his shooting a buffalo, something established way back in "The Telltale Head". Here, he clarifies the buffalo had in fact been tame. He'd just shot it.
* CassandraTruth: No one believed Lisa on the truth of the real Jebediah Springfield (except for Homer, surprisingly).
* DaddysGirl: If the image above isn't enough proof, Lisa seriously bonds with her dad in this episode.
* DeadGuyPuppet: Played for laughs when Chief Wiggum picks up Jebediah Springfield's skull and plays ventriloquist with it.
* EveryoneHasStandards:
** Moe exclaims that while he supports pretty much any prejudice you could name, Lisa's denouncing of Jebediah Springfield disgusts him.
** Even if Lisa is the kind of person that would expose a truth even if that means destroying someone's life because she believes it's the right thing to do, the fact that exposing this truth would destroy the hopes and dreams and sacrifices of countless generations of Springfield citizens past, present and future is something that makes her decide to keep it buried.
* EvilLaugh: Jebediah Springfield/Hans Sprungfeld when he finished writing his confession (he even ''wrote'' down his sinister laughter in as well).
** UnEvilLaugh: What it becomes when read out by Lisa.
* FakeUltimateHero / VillainWithGoodPublicity: Jebediah Springfield.
* {{Foreshadowing}}: Apu refers to himself as a "semi-legal immigrant," which would later be explored in "Much Apu About Nothing."
* GroinAttack: A flashback shows George Washington, while in his fight with Hans Sprungfeld/Jebediah Springfield, using his wooden false teeth to bite Sprungfeld/Springfield on the family jewels.
* HiddenInPlainSight: Jebediah's silver tongue. Hollis had hid it as a cowboy in one of the display cases of the Jebediah Springfield Museum. The 'plain sight' aspect is slightly questionable, since no one (except Lisa) ever visits the museum.
* HistoricalDomainCharacter: UsefulNotes/GeorgeWashington, he was Jebediah Springfield's (in his Hans Sprungfeld identity) enemy and even managed to put off an intense fist fight during Jebediah's assassination attempt.
** He later appears to Lisa as a vision to scold her when she considers giving up her effort to expose Jebidiah Springfield as a fraud.
-->'''George Washington''': We had quitters during the Revolution, too. We called them 'Kentuckians'.
* HistoricalHeroUpgrade: George Washington is ambushed by a would-be assassin, but out-wrestles him and sends him fleeing; of course, possibly not much of an "upgrade" for him at all, seeing how tough he was said to be.
* HonorBeforeReason: The situation with Sprungfeld stands out all the more (especially because of latter-season Flanderization) because it's a pretty rare time where Lisa decides on her own volition to ''not'' go down this path in the end, after an entire episode of trying to expose Jebediah come hell or high water.
* {{Jerkass}}:
** Marge outright dismisses and insults Lisa's findings without even considering it a possibility. Mrs. Hoover does so as well.
** Ms. Hoover, especially toward Lisa.
* MaintainTheLie: What Lisa ultimately decides to do, because of the positive influence that the legend of Jebediah Springfield has on the town.
* {{Mondegreen}}: In-universe. Homer mishears Lisa recounting Ms. Hoover calling her a "P.C. thug" as "greasy thug".
* NoHeroToHisValet: The main plot of this episode. When Lisa does find proof that might convince everyone (causing Mayor Quimby to consider shooting her before she can reveal it) she changes her mind, telling everyone that she was wrong the whole time. (Why? After seeing the positive factors of the town's bicentennial celebration like the veterans at the parade and children having fun, she decided that the town knowing the truth would destroy hope and morale.)
* NoodleIncident: Apparently, no town meeting in Springfield has ended without someone digging up a corpse. What were those other times?
* NotHelpingYourCase: Homer laments having been called a "greasy thug", and how much it hurts him. Then, his solution for making Lisa feel better is grease himself up, go around to the museum and smash everything with a baseball bat.
* OlderThanTheyLook: This was the first episode to imply that Kearney is above the normal age for an elementary school student. According to Principal Skinner, Kearney is the only kid in Springfield Elementary to remember both the 1976 Bicentennial and the Watergate scandal (which, at the time of the episode, would put him between the ages of 20 and 39) and he is seen shaving.
* PerfectlyCromulentWord: TropeNamer. This is the episode that introduced "embiggen" (which means "to empower") and "cromulent" (which has come to mean "acceptable" or "appropriate") as words that would later become part of the Oxford English dictionary.
-->'''Mrs. Krabapple:''' "Embiggens"? Never heard that word before I moved to Springfield.
-->'''Ms. Hoover:''' I don't know why, it's a perfectly cromulent word.
* PersonaNonGrata: Played with when an outraged Hollis Hurlbut, who after first hearing the news about the real Jebediah Springfield from Lisa, have Lisa (and her next two generations of progeny) banned from the historical society... for three months.
-->'''Hollis Hurlbut''': Get out! You're banned from this Historical Society. You, and your children, and your children's children! ... for three months.
* SoCrazyItMustBeTrue: Most of the townspeople scoff Lisa's insistence that Jebediah Springfield was actually a bloodthirsty pirate and rogue. But Homer believes her because she's smart and insightful and usually right about these things, even if they sound crazy.
* StylisticSuck: The movie about Jebediah the school kids watch. Examples include an obvious stuntman, Troy [=McClure=] riding a blatantly fake buffalo (with the squeaking of the prop left in the film), two extras pushing the fake buffalo into a crowd then trying to look inconspicuous, and the boom mic slipping into frame.
* TakeThat: George Washington says the Revolution's quitters used to be called 'Kentuckians'.
* TongueTrauma: Hans Sprungfeld's/Jebediah Springfield's silver tongue. His real tongue got bitten off by a Turk.
* UnfortunateNames: Marge tells Lisa that, when the Bouviers moved to Springfield, they could have instead moved to a town named ''Stenchburg''.
* WouldHurtAChild: A sniper confidently states he can hit Lisa. Mayor Quimby only tells him to stop because he wants to hear what she has to say. And when she decides not to tell the truth, the sniper fires anyway. She's lucky she walked away.