At the first few minutes of the film and it's already a rapid-fire comedy the moment Farhan receives a call from Chatur that he has found Rancho: he faked a heart attack to force the plane to abort the flight, then hijacks a taxi to fetch Raju, who immediately jumps to the taxi without wearing any pants.
A senior is threatening to pee on Rancho's dorm room for the entire semester due of not following the hazing ritual. What does Rancho do? Pulling an electric wire and connect the current to a spoon, which causes the senior's urine to conduct electricity. No one dares bother him after that. It's really his retreating to sanctuary, wielding the device like a spear, and the seniors backing off of it, that makes it. It gets even better more than a decade later: his students pull the same thing on Chatur.
Chatur's engineered speech during Teacher's Day. For starters, the way how Farhan and Rancho tricked the librarian into telling him that Virus was remembering him, and the librarian takes it as calling him. Meanwhile Farhan distracted Chatur into making a prank call telling him that his life's been threatened. All while Rancho edited the speech to replace certain words, the word serve is replaced with screw, bounty with breasts, and the last speech dedicated of his frequent farts. Thus the speech tells how Virus is dedicated to screw his students throughout his tenure in ICE and how the Minister gives his breasts to a screwer like Virus. The reaction of the viewers might be the same as the in-universe audiences during his speech.
Pia's boyfriend freaks out at Rancho ruining his precious Italian shoes with sauce while shouting the brand and its price. Raju and Farhan do the same thing to him again a decade later, this time to save Pia from marrying him, with roughly the same results.
Rancho: The all-powerful powerful mint sauce that exposes phony people!
Rancho relates a dream to Pia where riding with her on her scooter was the enchanting twenty-two minutes in his life, but the dream always ends before they kiss. A decade later, the scenario happens for real, but with a twist...
Rancho: Every night you ride into my dreams on a scooter, dressed as a bride. Instead of a veil, you lift your helmet, and come close to kiss me.
Pia: (slaps Rancho)
And Pia's reaction upon knowing Rancho's true name. Skewed Priorities can't even start her reaction.
In order to have the real Ranchodas Chanchad spill the beans, the two snatched his father's urn and threatening of flushing "Papa" down the "Sacred Sewer" instead of the "Sacred River". It's horrible yet hilarious.
Raju and Farhan discovering they had taken the wrong urn. While the real Rancho tells the story, Raju has his hand tightly over the urn to keep the former from seeing.
The real Rancho discovering the urn is empty, followed by a major freakout until a servant tells him Papa is just fine; Farhan and Raju got the wrong urn.
The ending. Watching as Chatur's mind puts all the pieces together of knowing that his business partner and his rival are just the same person just never, ever fails to be satisfying. Massive Oh, Crap! at its finest.
Drunk Pia, especially when she sneaks to the trio's dorm room flirting the hell out of Rancho while Farhan is getting shits and giggles over it (until Pia almost forces Rancho to have sex with her, in which Farhan finally draws a line and stops her). It's hilarious yet sad, considering the events that will happen next.
Every time Chatur's fart is referenced. The door that leads to his room back at college days has GAS CHAMBER on it.
Farhan: You're the sole cause of global warming!
The whole scene wherein the titular trio crash Mona's wedding, and it was no easy task picking the highlights:
"Ohhh, uncle!"
Rancho's "demo" to Pia to explain what a money-minded Jerkass Suhas really is.
"Sir, exactly how many daughters do you have in total?"
And even better? Without Rancho, Farhan and Raju once again crash a wedding with Virus in it as the father of the bride, this time with Pia's wedding. Farhan even lampshades it:
Farhan: Virus will surely have a heart attack if he sees us. At every daughter's wedding, we're here to rock the party!
Farhan's father is called 'Hitler Qureshi' and Raju's mother being called 'Mother Teresa'.
Every time the scene goes to Raju's house. It suddenly turns into black and white, referencing Raju's impoverished family.
Farhan describing Virus' letters being sent to the Qureshi and Rastogi's family.
Farhan: Virus' letters dropped like atom bombs. Hiroshima and Nagasaki, plunged into gloom.
When Farhan tells Raju that nothing is impossible, Raju squeezes toothpaste into Farhan's hand and commands him to put it back into the tube. It's the look on Farhan's face that makes this hilarious.
Rancho's brilliant, creative comeback to the lecturer's lambasting him for using a simple answer rather than the textbook definition. Expospeak Gag to fantastic effect.
Anytime Raju's pantslessness is brought up. The scene where he steals Chatur's pants is particularly fun.
Raju: Karl Marx said that one should share all one's resources!
Chatur: Give it back! I want it now!
(Chatur forces to pull his pants out of Raju's in a very compromising way)
Raju: Hey! You'll give people ideas!
Farhan and Raju try to find Rancho on the list of exam passers. Not just an exam passer, but he's on the top no less.
Farhan: Finding out your friend failed the exam, you feel bad. Finding out he topped the exam, you feel worse.
Millimeter imitates Virus' speech on the freshmen's first day in ICE. The transition makes it funnier.
After arriving half an hour late for an exam, the three boys end up finishing it late as well. The professor present refuses to accept their papers, scoffing at them while arranging the submitted papers. Rancho asks him if he is aware of who they are, as well as their roll numbers. The professor claims he doesn't care even if Rancho is the prime minister's son or some other important figure, but after being asked a second time, he claims he doesn't know. Realizing this, Rancho then takes his and his friends papers, and messes and mixes them up with the other papers then running away. This prevents the professor from rejecting them as he may end up with the wrong students and feels it is too troublesome to bother trying to find out who they are and doesn't pursue the issue further. The scene is as hilarious as it is awesome.
