Movie lines that you borrow in real life.

[GloomCookie]

Anytime one of my coworkers mildly inconveniences me. "You're killing me, Smalls." -The Sandlot

That's the only one I use on a regular basis. Others are highly dependent on the situation.

[Pink Duct Tape]

"I love my turtle." -Grandma's Boy

Much the way the above uses, "You're killing me Smalls," I use, "Settle down Beavis." From Beavis and Butthead Do America.

[Oniya]

I don't know if this made it into the movie, but from HHGG:

'Dark.  No light.  Dark.'  (When someone has said something very obvious, or when there's been a power outage.)

Sometimes, depending on the crowd, I follow it up with 'Oh my, you've just fallen down a fifty foot well.  Are you alright?'

[Pink Duct Tape]

Dark. lol.

I didn't think about it until earlier, when I did it, but I use, "Catch you on the flip side" too, from Boondock Saints.

[LostInTheMist]

My 2nd best friend/college roommate and I use "you will perish in flame" from Ghotsbusters as a rushed hello/goodbye. Any time one of us is in a rush going to something that the other is not. Whether class, a date, a social thing, whatever. *Walk into the room* "You will perish in flame!" *Walk out of the room.*

[Silvered Sutures]

My general response to people doing something that will go obviously poorly;

Rocky IV

“If he dies, he dies.”
Ivan Drago (Dolph Lundgren)

[Anakiel]

I use a lot these two lines from Star Wars: The Phantom Menace

"A surprise to be sure, but a welcomed one."

"The ability to speak does not make you intelligent."

[Inkidu]

I use a lot these two lines from Star Wars: The Phantom Menace

"A surprise to be sure, but a welcomed one."

"The ability to speak does not make you intelligent."

I've used some variation of "There's always a bigger fish."

[Shekinah]

Those of Scar from the lion king:

I'm surrounded by idiots

[Oniya]

A common bit of dialogue in the Oni-house:

'I've been thinking...'
'A dangerous pastime.'
'I know.'

[Muse]

Brilliant, Oniya.  I use that one whenever I can. Usually when one of my friends says the first like, I  interject with the second.  It's quite pleasant how often they manage to smoothly reply with the third and  keep going with their conversation.  

[LanaN]

“It’s a bold move Cotton, let’s see if it pays off.”

- Dodgeball: A True Underdog Story

The movie has way too many funny lines, and though I haven't watched it in years, I still frequently quote them.

[Inkidu]

- Dodgeball: A True Underdog Story

The movie has way too many funny lines, and though I haven't watched it in years, I still frequently quote them.

Oh, I have fully adopted, "You are [that is] about as useful as a doody-flavored lollipop." 

[Victoria Skye]

The french version of the first Mortal Kombat, when Shang Tsung says something like "You'll die tonight !"

In french, it was said with -the corniest- voice "Tu va mourir ce soiiiir!" And god it wrecked me. 

Now I say that to people I play fighting games with !

[Azuresun]

Originally by Evey in The Mummy, "You're not helpiiiing!", in a politely stressed voice.

[Raven Rawne]

Personally, I often use "some of you may die, but it's a sacrifice I am willing to make" by Lord Faarquad from Shrek. Usually I try to sound concerned, as if it's a heavy burden of responsibility.

[Inkidu]

The french version of the first Mortal Kombat, when Shang Tsung says something like "You'll die tonight !"

In french, it was said with -the corniest- voice "Tu va mourir ce soiiiir!" And god it wrecked me.

Now I say that to people I play fighting games with !

Oh, I used Cage's "This is the part where you fall down." All the time in Smash Bros. games. 

Also from The Mummy I always look for any opportunity to adopt the use of, "You're on the wrong side of the river!" 

[Avast Pariah]

“I am not a merry man!”
— Worf, ST: The Next Generation.

[AmbrosiaPudding]

Oh so frequently I find a reason to say "I'm tired of this grandpa" from Holes.

[Observing Trifles]

Two immediately come to mind:

"Must go faster." - Jurassic Park

"He's out of line but he's right." - The Falcon and the Winter Soldier (okay so it's a series, but I still use it)

[The Old Wolf]

I'm not even supposed to be here today

A lot of Kevin Smith Lines I work into conversations

[AmbrosiaPudding]

Unironically 

"La-ha-hoo-za-ha-her." 

Which is "Loser" from Ace Ventura 

[OwenNo6]

I quote too many movies to count, but some of my favorites or most used:

From LetterKenny:

"To be fair..." (used in response to anyone saying it, and hoping they catch on. I used to work in an office where several of us would chime in with that)

"You're spare parts, bud-"

From The Thing:

"you gotta be fuckin' kidding me..."

2001: A Space Odyssey:

"I'm sorry (insert name here), but I'm afraid I can't do that"

and when someone starts shit at work, Silence of the Lambs: (gotta say it in the Hannibal Lector voice though)

"A Census taker once tried to test me, I ate his liver... with some fava beans, and a nice Chianti (slurping noises)" -this was even better when I did work for the census in 2020

[LostInTheMist]

My group was hired to retrieve a "Deck of Many Things" in a D&D campaign I was playing in. When we had recovered it, we discussed destroying it instead of bringing it back to the guy who had hired us to retrieve it. After a successful knowledge roll, my character used the line, "The Deck cannot be unmade by any craft we here possess, [character name] daughter of [other character name.]" Got some kitchy nerd cred (and a bonus inspiration point) for the line.

[Oniya]

I have started using the phrase 'Bold strategy, Cotton' when one of my newer coworkers vocalizes that he's trying to avoid doing the things he was hired to do.

(Like, we can tell that you're phoning it in, but to actually say it out loud?)