Everything related to The Simpsons!
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1 point for the joke/scene.
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Now normally I wouldn't guess the episode, and today of course will be no exception.
Correct!
If that Gif you responded with in the other comment was from this episode it’s the one where Homer is desperate to be an inventor just like “THOMAS EDISON”! (Who was also a relentless self promoter) it’s been a decade at least since I’ve seen this so go easy on the recollection:
Homer invents the makeup shotgun and tries it on Marge who says she thinks he’s “got that thing set to [Harlequin]”
He also invents the electric hammer and it destroys everything in its path dragging him along for the ride - a second total disaster.
Then Homer nearly eats it falling backward as he leans in his chair at the dinner table. He doesn’t fall as he had added a hinged leg at the back of his chair to tilt out and make contact with the floor to stop him from falling. Marge and the family are actually really impressed with this idea and compliment Homer on it. Proud of himself, the family set off to see the Edison exhibit or whatever it is. As they’re going through Homer sees that Edison’s chair had the same 5th leg. Completely dejected that his one great idea had already been done - by Edison no less. I can’t quite remember how it plays out - I think Homer breaks in and wants to remove the leg from Edison’s chair so he can take credit for the idea” he uses the electric hammer which kinda destroys the whole exhibit. Homer makes his escape and I seem to remember a news cast the next day reporting on the vandalism. The button on the whole saga was that “in happy news” the event had led to the crediting of Edison with two previously undiscovered inventions - the 5th leg anti-tip safety chair, and the electric hammer.
You've got most of it, just a little out of order.
When Homer "invents" the extra chair legs, and is applauded by the family for it, he then takes a moment and talks to his picture of Thomas Edison. He then notices that the idea for the chair legs came from his picture of Thomas Edison.
Lisa points out that it isn't a recorded invention by Edison. So Homer and Bart set out, with the electric hammer, to the Edison museum to destroy the invention so Homer can claim it.
While exploring the museum, just before destroying the chair, Homer notices a chart/diagram similar to the one he setup in his invention workshop. While Homer was trying to catch up with Edison, he realizes Edison was trying to catch up with Da Vinci. Realizing that he and Edison are the same he decides not destroy the chair. At the same time someone checks in on the restricted part of the museum they were in and Homer leaves the hammer behind on accident.
A news report the next day highlights both the chair legs invention and the hammer invention. The news report goes on to say how successful the devices are and the money they will make.