3 Idiots is a 2009 {{Bollywood}} film starring Aamir Khan, Sharman Joshi and R. Madhavan. It is based on the book 'Five Point Someone' by Chetan Bhagat.

It revolves around three students studying in the Imperial College of Engineering, Delhi. Out of them, Raju Rastogi (Sharman Joshi) comes from a poor family and is desperate to pass and get a good job. The second, Farhan Qureshi (R. Madhavan), comes from a relatively better family, but has joined engineering [[BecauseISaidSo to please his father]], while he really wants to become a widlife photographer. However, their third roommate, Ranchoddas Chanchhad [[spoiler:AKA Phunsuk Wangdu]] is a radical-thinking young man, who challenges the educational system at every step he takes, infuriating the headmaster of the school, [[SadistTeacher Viru Sahastrabuddhe]] (Boman Irani).

Many years after they've graduated, they've all lost touch. Farhan gets a call from an old college-mate of theirs, [[SmallNameBigEgo Chatur Ramalingam]], who says he has found Rancho. Abandoning everything, Chatur, Farhan and Raju set out on a road trip, to find him. But all is not as it seems..

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!Tropes appearing in 3 Idiots include:

* AlliterativeName: '''R'''aju '''R'''astogi. Also '''M'''an '''M'''ohan aka Millimeter.
* AlwaysSecondBest: Chatur to Rancho.
* ArcWords:
** "Aal Izz Well/All is well". In the climax of the movie, saying them even helps to [[spoiler: awaken an apparently stillborn baby!]]
** "Your majesty, thou art great, accept my humble offering!"
* {{Artistic License}}: Chatur shows off his possessions since his job abroad, including his "new Lamborghini, 6496cc, very fast". He refers to the Murcielago. What he shows on his phone, however, is the Diablo, a decade-old Lamborghini, a thousand cc's less, and not so fast.
* TheBGrade: Chatur hates being AlwaysSecondBest to Rancho.
* BigBad: Viru Sahastrabuddhe AKA Virus.
* BigBadWannaBe: Chatur.
* {{Big Lipped Alligator Moment}}: The infamous Teacher's Day Speech by Chatur. This one contains a whole bag of tropes (EngineeredPublicConfession, CandidCameraPrank NotEvenBotheringWithTheAccent being the notable ones).
* BikerBabe: Pia, though technically she's a scooter babe.
* {{Blind Idiot Translation}}: Due to Chatur's poor Hindi, his translation makes his warning regarding the senior's intent of pissing on Rancho sound really silly.
---> '''Chatur''': Pray undress, or he'll do...'urine expulsion' on you.
---> '''Senior''': (He) calls pissing, 'urine expulsion'! [[SarcasmMode A true linguist in the land of engineers!]]
* BunnyEarsLawyer: "Virus" couldn't find a way to kick out Rancho because he's his top student. [[spoiler: And ultimately revokes his decision when he finally does]].
* TheCakeIsALie: "Virus" challenges Rancho to teach his engineering class. He has the students define a fictitious term to make a point about how the proper method of teaching.
* CallForward: At the beginning of the film, Chatur offers rum to Farhan and Raju. A scene in the college years shows the trio drinking to it.
* {{Candid Camera Prank}}: Two pranks within one. Chatur gets the librarian to write a speech for him to recite on Teacher's Day. Rancho and Farhan divert both Chatur (with a prank phone call) and the librarian (by telling him Virus was remembering him, which he understood as Virus calling him over), and then changed some of the words of the speech. Chatur didn't even ask what it means, but memorised it without thinking. {{Hilarity Ensues}}.
** The film begins with one such prank by Farhan to stay in Delhi to meet Raju, to find their long lost friend.
* CatchPhrase: Rancho's "Aal Izz Well/All is Well", which is also the film's ArcWords.
* {{Chekhovs Gun}}: Rancho made an inverter that could draw out power from car batteries named after Virus in an attempt get out of Pia's wedding. [[spoiler: It ended up powering the equipment for Mona's birth]].
*** The mint sauce. It was first used by Rancho on Suhas' shoes to show his personality to Pia. It's later used by Raju for the same purpose (to show Pia that Suhas' personality hasn't changed) and also to distract Suhas long enough for Farhan and Raju to steal away with Pia.
* {{Chekhovs Gunman}}: "Phunsuk Wangdu", the famous scientist Chatur is hoping to strike a deal with, turns out to be [[spoiler:Rancho's real name.]]
* {{Chekhovs Skill}}: Whenever Rancho said "Aal Izz Well" to Mona while she was pregnant, the baby kicked. [[spoiler:Guess what woke up the stillborn baby?]]
** In his first day, Rancho was being threatened by a senior to get his door pissed on. [[spoiler:[[CrowningMomentOfFunny He pulls a McGyver and conducts a current to a spoon which conducted to the senior's piss]]]]. [[spoiler:His future students]] do the same thing when Chatur tries to pee on their building's wall.
* ChildProdigy: Rancho can solve 10th grade math while in ''6th grade''.
* {{Christmas Cake}}: Raju's elder sister is twenty-eight and unmarried, a major cause of worry for their mother.
* {{Cool Big Sis}}: Mona to Pia.
* CoolTeacher: [[spoiler: Rancho ultimately becomes one]].
* CreateYourOwnVillain: If Rancho didn't humiliate Chatur, he would have just left him alone.
** And then the plot of finding Rancho will not happen because Chatur managed to find him to settle their rivalry [[spoiler: and along their way, finding clues about Rancho's true identity]]. Fahran and Raju didn't manage to find Rancho for many years so they tag along with Chatur, clinging the hope they could get to find their friend again.
* {{Dating What Daddy Hates}} : Pia dating Rancho. Virus absolutely ''loathes'' him.
* {{Dawson Casting}}: A particularly egregious example in the flashback scenes. All three actors were in their early forties at the time of filming.
** However, narrowly averted with Chatur and Pia. Omi Vaidya and Kareena Kapoor were both in their twenties during filming.
* {{DeadpanSnarker}}: Almost everyone.
* DecoyProtagonist: At the beginning you'd think that Farhan is the protagonist of the film. It's actually Rancho.
* DisposableFiancee: Suhas, because he's a materialistic {{Jerkass}}.
* {{Dope Slap}}: Given to Chatur by Virus after the former recites the teacher's day speech edited by Rancho filled with words that made the speech offensive. Particularly the 'Sanskrit Verse' at the end of the speech.
* {{Driven To Suicide}}: Joy, a friend of the trio. [[spoiler:Raju]] attempts this too, but is luckily saved in time.
** In the backstory, Virus's eldest son.
* TheEngineer: Many characters in the film aspire to be one.
* {{Engineered Public Confession}}: Inverted with Chatur's Teacher's Day Speech.
* {{Evil Gloating}}: Chatur at the beginning of the movie, showing off his mansion, car, job etc. to Farhan and Raju. Well, not ''evil'', so much as just 'I'm more successful than you despite the fact that you scored better'.
** And again with Rancho at the end of the movie, before he learns that [[spoiler:Rancho is Phunsuk Wangdu, the very man his company is going to sign a deal with.]]
* [[FourTemperamentEnsemble Five Temperament Ensemble]]: Rancho is Sanguine, Farhan is Leukine, Raju is Phlegmatic, Pia is Melancholic and Chatur is Choleric.
* FreudianTrio: Rancho is Id, Farhan is Ego and Raju is superego.
* {{Gasshole}}: Chatur, oh so much. Becomes a RunningGag.
--> '''Chatur''': I didn't do it! Raju?
* {{Gratuitous English}}: Chatur, again.
--> "Sir, I was born in Uganda. Studied in Pondicherry.. so, little slow in Hindi."
** Also "FARHAN-itrate" and "Pre-RAJU-lisation"
* {{Gilligan Cut}}:
-->'''Pia''': No, Farhan, it's not like that. Suhas is a changed man. He doesn't talk about brands or prices anymore.
-->(cut to Suhas screaming)
-->'''Suhas''': [[ItMakesSenseInContext MY 1.5 LAKH SHERWANI!]]
* HospitalHottie: Pia, who is a med student.
* HotScientist: [[spoiler: Again, Rancho ultimately becomes one]].
* HowWeGotHere: The movie intersperses the search for Rancho with shots of the main characters' college life.
* IHaveManyNames: [[spoiler: TheHero is knows as Ranchoddas Shyamaldas Chanchad/Chhote/Phunsukh Wangdu.]]
* InfantImmortality: [[spoiler: Pia's niece/nephew was thought dead, but Rancho's CatchPhrase revives him/her!]]
* InSeriesNickname: "Silencer" for Chatur, "Virus" for Prof. Viru Sahastrabuddhe. [[spoiler: Possibly "Chhote" to Rancho/Phunsukh Wangdu]]
* IronicEcho: "Hey... TakeThat!"
* {{Jerkass}}: Virus, very much so. Even though he [[TookALevelInKindness got better]] at the end of the movie, he still [[spoiler: drives two men to suicide.]]
** Chatur isn't a pleasing fellow either.
** Pia's DisposableFiancee openly berates her every time he has a chance.
* TheMaidenNameDebate: Pia loves Rancho, but she wants to keep her maiden name if they got married since his is both an OverlyLongName and a borderline FailOSuckyName (at least in her opinion). [[spoiler: She feels the same upon learning of his true name.]]
* MeaningfulEcho: "Every night you ride into my dreams on a scooter, dressed as a bride. Instead of a veil, you lifted your helmet and come close to kiss me."
* {{Mind Screw}}: Just WHO is Ranchhoddas Shyamaldas Chanchhad anyway? [[spoiler: A rich scion who conferred his name to their frend, so that he could pocket a degree without going to college]]
* {{Mood Whiplash}}: The trio are leading the college in [[AwesomeMusic "Aal Izz Well"]] and trying to rebuild a friend, Joy's helicopter design. At the end of the song, they finally build it, stick a camera on it and fly it up to his room window only to see... [[TearJerker Joy hanging from the ceiling, having committed suicide and the words "I QUIT" written on the wall in spray-paint.]]
* NamesToRunAwayFromReallyFast: Viru "Virus" Sahastrabuddhe.
* NinjaPirateZombieRobot: [[spoiler: Rancho ultimately becomes both a scientist ''and'' a teacher.]]
* NoEnding: We still have no idea why [[spoiler: Rancho abandoned his friends.]]
** We do, actually. Since [[spoiler:since the real Rancho's name is on the credentials, they can't have anyone from the college knowing that the Rancho that actually studied for the degree was a fake.]]
* OnlyKnownByTheirNickname: Viru Sahastrabuddhe is always called Virus. TheHero's [[spoiler: fake]] OverlyLongName is shortened to Rancho. Also. there's the TagalongKid Man Mohan who is always called Millimeter [[spoiler: until he grows up]].
* OverlyLongName: Ranchoddas Shyamaldas Chanchad.
* RoadMovie: Most of the present day scenes.
* {{Runaway Bride}}: [[spoiler: Farhan and Raju steal Pia away from her wedding to Suhas.]]
* SadistTeacher: Viru "Virus" Sahastrabuddhe .
* SavedByCanon: You'd know that [[spoiler: Raju]] will survive [[spoiler: his]] suicide since [[spoiler: he]]'s alive and well in the present day scenes.
* {{Screaming Birth}}: The trio help deliver Mona Sahastrabuddhe (Pia's elder sister)'s child, in the university storeroom, using [[NoodleImplements an inverter, a vacuum cleaner and a car battery]] to construct a vacuum pump after she's too tired to push anymore.
* {{Sesquipedalian Loquaciousness}}: Invoked when one of the teachers seems more impressed by Chatur giving an overly complicated definition of the word 'machine' memorized from a textbook instead of Rancho's simplified one, so in response Rancho gives one himself when wanting to go collect his books.
* SillyLoveSong: "Zoobi Doobi".
* SlapSlapKiss: Pia angrily smacks Rancho near the end of the movie after thinking she was played. Followed by TheBigDamnKiss‎.
* {{Shipper On Deck}}: [[CoolBigSis Mona]], [[TrueCompanions Farhan and Raju]] all support Rancho/Pia.
* {{Smug Snake}}: Chatur in the present-day portions of the movie. Until he's promptly shut up in the climax.
** The Minister invited for the Teacher's Day function at the college, when Chatur is talking about the Principal in the Teacher's Day speech. Until he starts talking about the Minister himself.
* TagalongKid: Millimeter.
* TeenGenius: Rancho and Chatur, especially the former.
* ThemeNaming: Millimeter and his dogs Gigabyte, Kilobyte and Megabyte.
* TokenEvilTeammate: Chatur serves as one during the present day scenes.
* {{True Companions}}: The eponymous three idiots. So much so that Farhan and Raju travel from Delhi to Shimla (a whole state away) only to realise that a {{Red Herring}} led them there and Rancho is really in Ladakh (which is a cold and barren desert, another couple of states away). They don't stop till they find him.
* {{Ubermensch}}: Rancho openly defies all the systems of his university from ''day one''.
* UnknownRival: Chatur has always been hell bent in defeating Rancho, but always fail.
* WhamShot:
** The trio discovering that [[spoiler: Joy committed suicide]].
** Farhan, Raju and Chatur discovering that [[spoiler: Rancho wasn't in the class picture]].
** [[spoiler: Raju]] committing suicide.