- From the trailer:J: I'm looking for Kay. Have you seen him? Sort of a surly, older gentleman. He smiles like this.
[puts on the most serious face he can]
- Agent J drops a very sly Chappelle's Show reference into 1969. When J was confronted about how he knew Agents O and K, he tried a lame excuse to say that he referred to couples as "Okaayyy!!" Also counts as Hilarious in Hindsight even if it was unintentional.
- Nearly every scene with Griffin, since being able to continuously see several dozen possible futures makes him a Cloudcuckoolander, is funny, awesome, or both. Especially his Brick Joke at the end of the film, "that was a close one".
Griffin: I'm so glad this wasn't one of the times we exploded!
- Special mention has to go to his utterly bonkers cackle of joy when he finds out they'll be traveling to Florida via jetpack.
Jay: "One of the times"?!
- Zed's Funeral:
- Agent O's eulogy , where she proceeds to paraphrase something an alien said about him... in the same language of the original quote. When the camera cuts to the assembled agents, everyone is looking somber, or even touched... except J, whose reaction is confusion-induced hilarity.
- K's eulogy for Zed, which K assured J would be wonderful, is all of three sentences:K: I worked with Zed for over forty years, and in all that time he never invited me to dinner. He never asked me to his house, or watch a game. He never shared a single detail of his personal life. [beat] Thank you.
- Similar reactions to O's speech from J.J: K, if I go first, make sure you say something more about me than that.
- In the kitchen of the Chinese restaurant, a real-life blobfish appears over a worksurface as a piece of Alien Lunch. Even funnier, they accidentally hit it during the fight and the fish complains with an absurdly human groan.
- This exchange:Wu: Man, what are you guys always trying to bust my balls for, okay?J: (cheerfully) You ain't got no balls, Wu!
- Even funnier when K rips off Wu's apron a few minutes later, revealing Wu's caterpillar-like lower body, and we see that J's right.
- This exchange:
- J gets stopped by two racist white cops for driving while black:J: How are you officers? What can I do you for?
Cop #1: Well, look at this. Power windows, power seats. I'll bet you the thing costs six grand.
J: Uh... yes, and it has a roof, but it's hidden.
Cop #2: Hey, what kind of work do you do? An individual of your particular ethnic persuasion?
Cop #1: Maybe he's a noted athlete.
J: Mm. Yes, uh...starting forward for the Detroit Darkies.
Cop #1: Where did you get the car?
Cop #2: And the suit?
J: I stole them, both. Uh... the car from [indicates one cop] your wife, and the suit from [indicates the other cop] your grandmother.
[cut to the cops shoving J against the car to pat him down]
Cop #1: [finds J's gun] What do we have here? Concealed weapon?
J: Hey, it's his grandmother's suit! [the other cop takes J's neuralizer]
Cop #2: Hey, what's this?
Cop #1: Probably drugs.
J: Listen, I have rights and I demand to see my lawyer before you press that small button on the side firmly.
Cop #1: Press it. [the cop holding the neuralizer presses the button and they are both neuralized]
J: That, gentlemen, is a standard issue Neuralizer, but you're not gonna remember that. AND JUST BECAUSE YOU SEE A BLACK MAN DRIVING A NICE CAR, DOES NOT MEAN THAT IT IS STOLEN! [beat] ...Well, I stole this one. BUT NOT BECAUSE I'M BLACK.
- When J first meets young K.J: [overjoyed] Kay!!! [moves to hug him]
K: [wordlessly tases J]
- After time has been altered, J is back in MIB HQ and asks O about what's been happening. O says that there are two possibilities about it, the first being a long winded explanation about a dangerous alien tick that could kill J... and then promptly slaps J hard.O: [disappointed] Damn it, it's not the tick...
J: [annoyed, rubbing his cheek] "Damn it, it's not the tick?!"
- "Mommy, the President is drinking my chocolate milk! He didn't say please..."
- The "Viagrans", who have developed a "revolutionary new pill".
- Agent W. No, Andy Warhol wasn't an alien spy, but he was on the job against those who were!
- That entire scene. "I'm photographing a man eating a hamburger... it's... transcendent... now the pickle!"
- "K, you have to get me out of here! I can't tell the women from the men!"
- When J convinced young K not to neuralyse him, they wind up having to hide it from the chief on the way out:Chief: What's he still doing here?
K: I might have cooked him too long, figured I'd walk him out.
J: [playing along] I put muh pants on...!
- The Historical In-Joke involving Apollo 11:Buzz Aldrin: If we report this, they'll scrub the launch.
Neil Armstrong: I didn't see anything.
- When Boris's girlfriend smuggles the palm bug to him in a cake:Boris's Girlfriend: It's a cake.
Guard: I'll be the judge of that.
[scans the cake]
Guard: It appears to be some sort of cake.
- When J is driving with 1969 K, he just sits there in the passenger seat, staring at him and smiling like some sort of creep.K: You lose something over here, Honda?
J: Hey man, I've been wondering, how old are you?
J: Ooh. You've got some city miles on you.
K: I'm starting to get a sense of why we don't talk.
- Just before the Cosmic Lanes scene, there's a bit where J and K are traveling in K's old car. J just keeps staring at K, with K giving a few disturbed looks, all in silence.
- Boris talking to his old self is truly a sight to behold, it's like watching Jemaine Clement trying to outham himself in an ever-lasting scenery-chewing competition. In particular when Future Boris is talking but Past Boris keeps staring at his lost arm.:
- Still on Boris, one can't forget his absolutely glorious laugh.
- J, K, and Griffin are heading to the rocket launch site when they see security heading up to stop them. K pulls out his neuralyzer... which runs on a battery belt and dial-up modem. J gets tired of waiting and just pulls out his own neuralyzer. Then, Griffin tells J he has to tell the truth and not use the neuralyzer. J goes for Exact Words and tells the security officers the truth... about them working for a secret organization and needing to stop an alien invasion. Cut to the officers throwing J, K, and Griffin on the ground. K's overly cheerful look during J's explanation is the perfect cherry on top.
- When Jay confronts Jeffrey about sending Boris back to the past, he demands to know when and where exactly he sent Boris. Jeffrey tries to play the fool and act like he doesn't, scoffing on how Jay actually thinks he keeps a log book. Cue Jeffrey looking down on the counter and grimacing briefly before looking back at Jay. Jay promptly looks down as well and sees, lo and behold, a logbook. Conveniently right in front of him. It's Jeffrey's chagrined expression that sells it.
- An absolutely horrible bit of Black Comedy when J is performing the time jump. As he looks around and sees history unfolding before his eyes, he gets to the Stock Market collapse. As he looks around he sees a group of Wall Street stockbrokers jumping to their deaths. One of them looks at him and tips his hat, which promptly goes flying.
- J's reaction to seeing Griffin's powers and Griffin's response.J: This is amazing...
Griffin: It's a gigantic pain in the ass. But it has its moments.
- At the end of the movie, when J returns to the present and meets up with K:J: What do you know, what do you don't know?
K: How the hell do I know what I don't know?
- If Griffin's musings are to be believed, then the asteroid being narrowly intercepted by a satellite during the last scene of the movie only happened because K remembered to leave a tip at the diner he was eating at.
Funny / Men in Black 3