Oh Bart, cartoons don't have to be 100% realistic

-Maude died, but still appears in crowds (so does Frank Grimes by the way...and some other supposedly dead people)

-Poochie died on his way to his home planet (where they needed him cause he was bringing the ratings down on earth...) but still appears once and a while, even on the itchy and scratchy show

-Marge and Homer were in high school together, went to the prom at the same year, had their reunion at the same time, insinuating they were in the same class, yet Homer's 39 and Marge only 34

-In the episode where Bart gets a check-book he signs the check he gives to Lisa (for 4 cents...and no cents) with his LEFT hand.  Later in the episode he signs it with his right.

 

-Homer's skull is supposed to be so thick that he can't be knocked out by repetitive beating with a bat or something like that, yet in the episode where Maggie listens to Roofi all the time he knocks himself out cold with a hammer

 

-Because of the Simpson Gene all Simpson men are supposed to be idiots, yet Herbert Powell is still smart and successful.  On the same note, the women are supposed to be successful, but Homer's sister (from the UK) absolutely isn't

 

-GoTubsGo explained one to me, that I would have never known (thanks for that).  In the Hellfish episode they talk about Skinner's father, but in the next season we find out that Skinner is really Armin Tamzarian, so it couldn't have been his father (though I don't know if this one counts because they didn't know Skinner wasn't Skinner yet...)

 

-Apparently there are some continuance mistakes with the house they live in as well.  The lay-out seems to be different in some episodes, according to how it has to turn out in the episodes.

 

-The age of Mr. Burns is not always the same.  Generally he's 104, but in one episode he's 70 something

 

-Smithers still has time for his Malibu Stacey collection, or to walk to work whistling, while Homer, when doing Smithers job, had no free time at all, yet it's the same job

 

-In the whole beginning of the show, Smithers was a lot darker of colour, even mulatto, yet later on he's yellow just like the others

 

- When Smithers is caught coming out of the Maison Derriere, he claims that his parents have pressured him into going, yet later in the show we find out that his parents have died while he was a baby and that Burns raised him (talk about an Electra complex...)

 

- In the episode about Homer's first kiss, Milhouse kisses Homer in a spin the bottle game, and he says 'aaah my first kiss', but earlier he smooched lots with Samantha Stankey (ok so maybe Milhouse is gay and dr. J Prior was right after all)

 

- Where does Barney live?  He phones Homer from his home, and he has filmed puke-a-hontas there, but in one episode he is seen coming out of the bathroom of Moe's tavern with his toothbrush and shower stuff.

 

- In the episode where Bart sends Moe over to the house to catch Jimbo because of Laura Powers, he says the address is 1094 Evergreen Terrace

 

- Homer's car gets smashed so often and yet his is always fixed, but Marge's Canyonero stays smashed when it catches fire

 

- Smithers is allergic to bee stings in a way it nearly kills him when on the tandem, but when Burns retires and becomes a beekeeper it doesn't seem to bother him

 

- The elementary school at first was white, but later it changed to yellow

- Ms. Hoover's hair is blue in some episodes and in others it's brown.  I know you can dye your hair, but hey, still worth mentioning (probably also a difference between earlier seasons and later seasons...)

 

- When Homer gets a gun he is labelled as potentially dangerous, which limits him to 4 handguns or less, but in the Halloween episode when they all give up their guns, Homer just keeps on giving.  Also in the casino episode Homer already has a shotgun cause he shot the door with it against the boogieman.  Plus he makes the make-up gun...

 

- On the same note as one mentioned before...Homer can't be knocked out by a blow to the head, but when Maggie attacks him with a mallet because of the Itchy and Scratchy cartoons he passes out

 

- In one episode Moe is born in Indiana, but in the proposition 24 episode Moe is an illegal immigrant

 

- In season 15, the episode where Marge writes a book, Dr Marvin Monroe is back, but in the 138th spectacular he was announced dead...woohoo we have a zombie

 

- In the episode of Homer's triple bypass, apparently Snake supposedly lives on 742 Evergreen Terrace (the Simpson's address), and Lovejoy is his neighbour (in the Flanders' house)

 

- Nelson's dad is supposed to have been gone forever, but after playing pee wee football his dad picks him up to go visit his mum at work at Hooters

 

- In the Stonecutters episode you see Homer Park his car at the power plant in the beginning on the other side of his house, and there's supposed to be a fence and other houses there...I think at least.  And when Marge drives the Canyonero she drives through the fields to the house, but when Bush moves to Springfield his house is where Marge drives through the fields...

 

- They are only named the B-Sharps halfway in the episode, yet already in the beginning of the episode they are already advertised as the B-sharps when playing in the church

 

-In Kamp Krusty, Lisa writes the letter to her parents with her left hand.  I thought she was supposed to be right handed?

 

-In Kamp Krusty, Ralph is a lot taller, though this is nitpicking

 

-In the beginning the trunks of trees were purple, now they're brown (Matt Groening explained that as back then still wanting to use the fact that you can do anything in cartoons, but now they strive to be more realistic)

 

-At one point in Bart's Inner Child, Homer and Marge are in bed together, and she sits up and is nude, then you see her face and you see her neck covered with a nighty and the next moment the nighty's gone

 

-In the episode with Mount Splashmore Krusty takes of his make-up at the end of the interview, but when fakes his own death and then afterwards swims under water you see that the clown-make up is actually his real face.  Plastic surgery in the mean time, maybe?

 

-The grown ups have grown older by a couple of years, but the children have remained the same age

 

-In the episode where Apu gets married he is only just enjoying his bachelorhood, implying that before he didn't really.  But in the episode where Lisa got her pony, Apu was in bed with princes Kashmire while Homer was running the store

 

-In the past, they buy the house they live in now when they get married, but when the story about Lisa being born starts, they live in a sort of New York style area

 

-Krusty's cattleskull birthmark disappeared over the years

 

-Burn's spots sometimes seem to jump place

 

-In older episodes there are fish on the bathroom walls, and I think they're gone now

 

-At one point Marge is in bed with a calculator because they're having financial problems and it suddenly disappears

 

-Where have the other barflies gone?  have they died?

 

-Moleman dies all the time...

 

-Homer's Chest and Back hair seem to have disappeared over the years

-Bart's shirt is Brown in some episodes of Season 2

-In "Brush with Greatness", Lenny's voice comes out of Carl

-In Regarding Margie their address is 740 Evergreen Terrace, but in other episodes it's 742 Evergreen Terrace