In the series' 550th episode, Homer wakes up to a world made out of LEGO bricks and grows to like this new world, where everything fits in and no one gets hurt — until he begins seeing flashes of a previous life and, with help from The Comic Book Guy, discovers how he ended up in the LEGO world.
- Abnormal Ammo: Bart's robot shoots lions, lightsabers and Skinner's head.Skinner: This is strangely exhilarating!
- All Just a Dream: The Lego portions turn out to be the result of Homer dreaming after being knocked out by Comic Book Guy's Lego statue of the episode's Katniss Everdeen parody.
- All Men Are Perverts: The real world Comic Book Guy defends his Lego statue of the Katniss Everdeen Expy as a strong feminist icon, only to then giddily increase her (already large) bust size with more bricks.
- Arc Words: "Everything fits together and no one gets hurt."
- Art Shift: The episode toggles between the show's usual 2D, digital ink and paint style and Lego-style stop-motion/computer animation.
- "Before" and "After" Pictures: A weight loss clinic advertises itself with pictures of a female minifigure in a bikini. Close observation from the viewer would reveal that the "after" picture is simply the "before" picture with extra shading applied to the minifig's torso-making her appear to have an hourglass figure-and her mouth changed from a frown to a smile.
- Black Comedy: To a degree, considering most of the episode is set in a Lego world where the Lego minifigures can undergo what would be grievous injuries and fatal accidents to living people due to not feeling pain. Krusty being shattered by Homer's distracted driving and Homer taking off his own head and kicking it come to mind.
- Built with LEGO
- Crazy-Prepared: Lego Comic Book Guy is well prepared to stop Homer from going home due to having every Lego set in existence to both build a fortress around the Perky Patty's Princess Shoppe box and summon ninja and pirate minifigures to attack Homer.
- Double Aesop: Homer learns to enjoy the special bonding experience he had with Lisa, but also learns that he can't hold her back from growing up and getting other interests either.
- Evil All Along: A variation occurs when Lego Comic Book Guy turns out to be the antagonist of the episode, revealing that he's the part of Homer that doesn't want to leave the Lego world. Lampshaded when Homer says he thought he was just the "rule explainer guy".
- Feel No Pain: The Lego people can happily disassemble and reassemble themselves; Homer even crashes his car into Lego Krusty, and the latter is totally cool about it.Krusty: Good thing we don't feel pain!
- Foreshadowing: Comic Book Guy having a "NO OUTSIDE REALITIES" sign in his shop indicates that he's aware that his world is a part of Homer's subconscious, and that he'll do anything to prevent a Dream Apocalypse.
- Formula-Breaking Episode: A twofer: the episode is the 550th overall and most of the animation is stop-motion using Lego bricks.
- Fridge Horror: An in-verse example is how Homer comes to realize the Lego world is not as nice as it seems, considering he'll still have the same crappy job, will never get to enjoy retirement with Marge, and will never see his kids grow up.
- Happy Place: Homer creates the Lego world inside his head as a place where everything stays the same and nobody gets hurt.
- Hypocritical Humor: Groundskeeper Willie scolds Bart and Milhouse for breaking the school's support bricks. Once they tell him they're chasing a skunk, Willie crashes right through said support bricks to pursue it.
- Insistent Terminology: "Muh... it's not selling out, it's co-branding... co-branding!"
- Just Here for Godzilla: In-Universe. Homer is painfully bored by the romantic subplots in The Hunger Games parody and just came to see kids killing each other.
- Late-Arrival Spoiler: A joke near the end spoils a major plot point in The LEGO Movie.
- Leaning on the Fourth Wall: This scene in the beginning:Bart: Hmm... is it just me or does something seem weird today?
Marge: You're right. Something is very different about the Simpsons today... your father's wearing a tie!
Bart: Oh, that's what's different!
Lisa: That's the one and only thing!
- Lotus-Eater Machine: What the Lego Springfield turns out to be (which is naturally lampshaded by Lego Comic Book Guy when he picks up on Homer's "hallucinations" due to his knowledge of second-rate sci-fi stories). Homer's initially not worried about the possibility of being trapped in there given how much fun he can have, but he soon realizes how the lack of change will actually make things worse.
- MacGuffin: The box to the Perky Patty's Princess Shoppe set built by Homer and Lisa in the real world that allows Lego Homer to realize the truth and return to the real world
- Medium Blending: As Lego Homer experiences more and more "hallucinations", the regular Simpsons animation begins bleeding into the CG Lego world. A notable example is when his clawed hands suddenly become the flesh and blood varieties of his real self, while the rest of him is still a minifig.
- Mistaken for Racist/One Dialogue, Two Conversations: Lego Homer freaks out at the sight of the real Homer appearing in place of his reflection in the Kwik-E-Mart display windows. He angrily yells at his reflection to go back "where [he] came from", which Apu, who is on the other side of the window, misinterprets as a racist remark.
- Off with His Head!: A Running Gag of the episode done with various characters to demonstrate their durability as minifigures. Most notably used when Bart fires Principal Skinner's head out of his mech's cannon to destroy Lego Comic Book Guy's fortress.
- Self-Deprecation: Homer mumbling in his sleep at the beginning of the episode:Homer: Muh... it's not selling out, it's co-branding... co-branding!
- Homer realizing the fatal flaw of the dream world (everything stays as it is with no chance for growth) seems to be a commentary on the show's longevity.
- Shaking the Rump: "Kiss my flat, plastic butt, reality!"
- Shout-Out: Many to various forms of Lego products, from Maggie being a Duplo baby to an orange brick separator (akin to what's available in larger sets) standing in place of the cross at the church. The Perky Patty's Princess Shoppe is also somewhat reminiscent of the Lego Friends and Disney Princess lines.
- Even a non-construction-related Lego toy, namely the Lego Duck, receives a nod in the form of a stained glass church window.
- Naturally, The LEGO Movie itself is referenced in various ways throughout the episode. The most notable examples include the premise, Comic Book Guy's head spinning a la Good Cop/Bad Cop, Bart's designing of a mech to save the day, and Homer denying any familiarity between the episode's plot and the film as a Lego display of Emmet and Wyldstyle is wheeled behind him.
- Lego Bart's mech vomits Sith lightsabers.
- The Survival Games
- The shelves at the comic book store are stacked with books by Philip K. Dick (or rather, Philip K. Brick), which alludes to the true nature of the Lego world. "Perky Patty" as in Perky Pat from "The Three Stigmatas of Homer Eldritch".
- The ending sequence is a direct homage to the ending of the film Time Bandits
- Comic Book Guy turns his head to switch from a smiling to a scowling face, like the Mayor of Halloween Town. *
- Smelly Skunk: A Lego variation that Bart brings to school, that inevitably causes the school to collapse when Groundskeeper Willie destroys the support bricks to pursue it.
- Take That!: According to Homer, what is "the most inhumane torture ever devised by man"? Candy Land.
- The Little Shop That Wasn't There Yesterday: After Lego Homer sees animated Homer in the bathroom mirror, he asks Marge if she got a replacement mirror from one those stores.Homer: Marge! Did you replace our regular mirror with a magical mirror from a mystical salesman at a weird store that if we went back to find it it wouldnt be there anymore?Marge: No.Homer: (screams)
- Whole-Plot Reference: "Brick Like Me" is essentially a Simpsons take on The Lego Movie, albeit with a somewhat different direction and moral (as both have Aesops about creativity and accepting change, but "Brick Like Me" is more directly concerning a person's attempt to escape the real world through immersing themselves in Legos). Lampshaded by Homer when he describes the experience to Lisa as "having a dream where [he] was in a world made of Lego bricks and learned important lessons about parenting". The episode apparently started production before the crew was told by Lego about the movie.
- Wrong Genre Savvy: The above quote from Homer