Episode - 5F21\\
First Aired - 9/20/1998

Homer becomes an inventor after realizing his life is almost half over and he hasn't done anything that will be considered a legacy.

* BaitAndSwitch: During the tour of the Edison Museum, the tour guide shows a roped off door to a room housing Edison's preserved brain. He then says that that tour groups ordinarily weren't allowed to see the brain while unhooking the rope...before adding "and today will not be an exception" and rehooking the rope, much to the tour group's disappointment.
* BrokenPedestal: When Homer notices that his single ingenious invention was already invented by Edison, he decides to destroy it at the Edison museum and take credit for its invention.
--> '''Bart:''' But I thought you loved Edison.\\
'''Homer:''' Aw, to hell with him.
** The pedestal is then {{rebuilt|Pedestal}} when he see that Edison compared himself to Leonardo [=DaVinci=] much like Homer compared himself to Edison.
-->'''Homer''': ''[about Edison]'' We're not rivals: [[NotSoDifferent we're just a couple of dreamers who set the bar a little too high]].
* BunglingInventor: Homer's first inventions are generally terrible, unless that is anyone out there feels the need for an everything's-OK-alarm, a make-up shotgun, or an armchair toilet.
** Subverted with the electric hammer which is actually a clever idea, just that Homer made it too powerful to handle. In fact, the patent was said to generate millions for Edison's (already) wealthy heirs.
* CallBack: Barney being an Oscar-winner in Homer's imaginary funeral refers back to "A Star is Burns", when Barney won the Springfield Film Festival for his autobiographical movie ''Pukahontas''.
* {{Foreshadowing}}: Homer falling over in his chair while the kids were visiting him in his invention workshop.
* GettingCrapPastTheRadar: Homer implies he's letting out a big load in his toilet chair over losing the royalties to his electric hammer to Edison's (already) wealthy heirs.
* HollywoodMidLifeCrisis: The plot kicks off when Homer hears on the radio that the average male life expectancy is 76.2 years, when he himself is 38.1 (although Marge [[FromBadToWorse points out he's actually 39]]). However, the trope is actually downplayed as all Homer does is decide to become an inventor.
* HomemadeInventions: After Homer decides to model his life off of Thomas Edison, he dabbles in inventing. Most of them are terrible.
* ItWillNeverCatchOn: Marge says that Homer's inventions: the electric hammer, the 'everything's okay' alarm, the make-up gun, and the toilet chair, are terrible and no one would want them. While it's true that the others are bad, Homer's electric hammer proves to be a stunning innovation, even more impressive than the six-legged chair.
* ItsBeenDone: After several disasters, the one invention that works turns out to have been invented by Edison himself but apparently unnoticed, prompting Homer and Bart to travel to Edison's workshop to destroy it. Homer decides not to once he sees [[NotSoDifferent that Edison himself also had a "rivalry"]] similar to his with Creator/LeonardoDaVinci. Homer decides to split the difference and take both his and Edison's frustrations out on the Eli Whitney museum.
* LonelyFuneral: Homer imagines himself dying with no accomplishments to his name. The only attendees in his funeral are President Lenny and Oscar winner Barney Gumble, as well as the robot from ''Series/LostInSpace'' and WesternAnimation/HeckleAndJeckle. Homer's corpse gets dumped into his grave by a dump truck, and several dogs start to chew on his exposed feet.
-->'''Homer:''' Marge, no matter what happens in the future, promise me you won't vote for Lenny.\\
'''Marge:''' ...Okay.
* MisplacedRetribution: After Homer decides not to smash Edison's six-legged chair, he decides to take his rage out on the Da Vinci Museum. When Bart mentions it's in Italy, he settles for the Eli Whitney Museum.
* NiceJobBreakingItHero: Due to Homer leaving his electric hammer at the Edison museum, it is falsely attributed to being ''invented'' by Edison, and winds up making his heirs (even more) rich.
* NoodleIncident: Homer says he was banned from Springfield's public library because of some "unpleasantness". He also quit his job at the power plant off-screen.
* OhCrap: Homer, when he realizes that the desk drawer he put his files in was actually the dryer.
* PeopleFallOffChairs: Homer falls victim to this so much in the episode, he ops to add extra legs to his chair. And it is soon revealed that Edison had the same idea.
* RoyaltiesHeir: One of Homer's inventions (an electric hammer) is making millions. Unfortunately, for his family, the invention was credited to UsefulNotes/ThomasEdison, the royalties went to his "already wealthy" heirs.
* StatusQuoIsGod: As in "[[Recap/TheSimpsonsS9E19SimpsonTide Simpson Tide]]", Homer quits his job at the plant and hasn't got it back by the end of the episode, but in subsequent episodes he is back working there.
* StrangeMindsThinkAlike: Professor Frink actually had the same idea for 'hamburger earmuffs' as Homer. He's confident he can get his prototype patented while Homer is still struggling with the 'pickle matrix'.
** The discovery that kickstarts the climax: As Homer is reveling in his successful invention (legs that prevent a chair from falling over), a closer inspection of his Thomas Edison poster causes him to discover that Edison had the same idea.
* TimTaylorTechnology: When Homer first showed off his electric hammer, it goes haywire and starts dragging him across the floor. He turns it off and concludes, "Probably needs to be more powerful."
* TranquilFury: "Let's just say [[BowelBreakingBricks I'm sitting in the right chair.]]"
* TheUnreveal: One room at the Edison museum holds Edison's preserved brain.
-->'''Tour Guide''': (unlatches the velvet rope) Ordinarily, folks, tour groups are not allowed to see it. (relatches the velvet rope) And, of course, today will be no exception.