Because they're cliches.
I thought I'd compile a list. There are a few online, mostly not great, but I've pilfered what I did rate - it's the nature of the game, really, isn't it?
Apparently
Let's get out of here
and it's variations is the most overused line of all time in movies. Fair enough. I'm a little more interested in the lines that are actually supposed to denote some cleverness. Sarcastic ones, in particular.
Here's what I've got so far:
She’s/he’s good.
You have no idea.
That wasn’t part of the deal.
You haven’t heard the last of this.
Where do you think you’re going?
We have to get out of here – now!
There’s been a change of plan.
People don’t change.
What the hell was that?
Trust me, you don't want to know.
Trust me, you do not want to do that.
Come on! There’s another way out of here.
Does this place have another exit?
We’ve lost power. / We’re losing power.
We’re losing him / her.
Well, let’s just say…. [there's been a change of plan / we've made other arrangements / he's not what you'd call an ordinary__________. / someone was waiting for him. etc.]
OK, what just happened?
OK, am I missing something here?
Boy, are YOU in trouble!
This place gives me the creeps.
Try and get some rest.
Is that all you got?
I’m just getting started.
Come in. _______ was just leaving.
How hard can it be?
Are you thinking what I’m thinking?
OK, this is a joke, right?
You say that like it’s a bad thing.
Don’t you get it?
OK, now you’re really starting to piss me off.
Call me a ________ one more time.
This is NOT over.
Tell me what you see.
OK, this is ****ed up.
Something’s not right. / Something doesn‘t feel right.
We can beat this thing.
I want your badge and your gun.