Quotes / Sanity Slippage

"Those whom the gods wish to destroy they first make mad."
Euripides

"I am slowly going crazy one two three four five six switch"
Sharon, Lois & Bram

"Are we losing our minds, Barry? Could be, Other Barry. Could be."
Barry, Archer

I'm one card short of a full deck
I'm not quite the shilling
One wave short of a shipwreck
I'm not at my usual top billing
I'm coming down with a fever
I'm really out to sea
This kettle is boiling over
I think I'm a banana tree
Queen, "I'm Going Slightly Mad"

I don't know how much I can take / The secret thoughts inside me wake
I've lost what was within me / Oh sweet insanity
Now I try again to find / The thing that was my mind
Behold the undersigned / Who said I've lost my mind

"Okay, don't freak out, don't freak out...! I SAID DON'T FREAK OUT, DAMMIT! OKAY! I'm totally not freaking out right now! Because... this is me not freaking out! What do I have to freak out over anyway!? NOTHING, BECAUSE I'M NOT! I'M JUST NAVIGATING A FLOATING OBSTACLE COURSE THAT LOOKS LIKE A... GIANT... PLATE-BALANCING TRICK DESIGNED BY H. R. GIGER! FUCK YOU, REALITY! YOU'RE FULL OF SHIT!"

Objective: Stop the Egg Carrier’s Launch!
Kung-Fu Jesus: Stop it! Stop the launch! Stop it! Stop the launch. If you don't stop the launch, then, the Britons... um... okay, so eggs are like an integral part of, of breakfast? And then, if you stop the launch, no one's gonna eat breakfast anymore! And... that's bad.
medibot: Breakfast has been wrecked—
Kung-Fu Jesus: Breakfast eating stop! (Sonic hits a wall) Run into walls!
pokecapn: So basically, this whole thing is to stop breakfast.
Kung-Fu Jesus: Yes. Breakfast is very delicious. But I can see why some activists believe that breakfast is harming America's children. [...] There's a thing also for breakfast called waffles. One day there was a day here at the place where we are called Free Waffle Day...
pokecapn: Uh-huh. (deals with laser fences) That's the GUN security system.
Kung-Fu Jesus: I hate the GUN security system.
a door closes in Sonic's face
pokecapn: SHIT PICKLE!!!

It's fine. It'll all be fine. The day isn't over yet. But it will be over soon! (groans) It'll be all over! My time in Ponyville! My advanced studies! Nono. You're a good student. You can do this. Ooh! But what if I can't? You can. You just have to keep it together. Keep. It. Together! [...] HI GIRLS!

You have crossed from pleasant eccentrics to dangerous psychopaths.

Mike: They did it! Those plucky little Hobbits destroyed The Ring!
Kevin: Uh, Mike? We're not in—-
Bill: Shhh, shhh, shhh, shhh... he's in a better place now.
Mike: And the eagles are coming! The eagles are coming!
RiffTrax as Mike Nelson loses it while watching Battlefield Earth

Jason: Hey, I got a crazy question. You won first place at that swimming championship this year, right?
Daisy: Yeah, the 400 meter.
Jason: What did it feel like, winning? Not afterward, on the podium. But in the water, when you hit the pad.
Daisy: Like I was really... present. Like the whole world was me.
Jason: You know... I never thought I'd be able to kill someone. The first time, it felt wrong. Which is good, right? But now... it feels like winning.

4:31
Lying awake at night, I realize how many little lights there are in my room. The alarm clock is the brightest.
4:32
Can't sleep. I'm alone with those glowing red numbers. Time slows. Does time even exist here?
4:33
Thoughts churning in on themselves. The madness can't be far away.
13:72
Ah yes. There it is.
(Crap, I have levitation class at 25:131. Better set the alarm to 'cinnamon'.)
xkcd #313: Insomnia

Didi: Stu? What are you doing?
Stu: Making chocolate pudding.
Didi: It's four o'clock in the morning. Why on Earth are you making chocolate pudding?
Stu: Because I lost control of my life.
Rugrats, "Angelica Breaks A Leg"

(Sobbing, slowly turning into a little nervous laughter) "They will burn. They will all burn, yes, burn! HA HA HA HA HAAA!!!"

"I'm... on a murder break."
Ryan Haywood, Ten Little Roosters

Narrator: When Stanley came to a set of two open doors, he entered the door on his left.
Vegeta: No, I'm making a choice!
Narrator: This was not the correct way to the meeting room, and Stanley knew it perfectly well.
Vegeta: I know it damn well!
Narrator: Perhaps he wanted to stop by the employee lounge first, just to admire it.
Vegeta: I know where I'm going. I know what I'm doing. Look at the lounge; it's fantastic! I made the choice to come here! And now I'm moving this way, because I can go this way!
Narrator: Stanley took the first open door on his left.
Vegeta: No, I'm not! I'm going this way! Because I can! It's where I'm going! Because I'm going this way! (dives off the balcony) RENEGADE FOR LIIIIIIIIIIIIIIIIIIIIII-

Nick Fury: You didn't tell me he'd gone this crazy.
Phil Coulson: He's really stepped it up a notch.
Agents of S.H.I.E.L.D., "Beginning of the End", about The Clairvoyant

Panic. Don't show panic. Show confidence. But confidence in what? You know you're not the broker you used to be, and it's probably just a matter of time until the pack figures it out, too. Ditch them? Maybe get leverage on them? Blackmail? Don't show panic.
Broker For The Damned, Vampire: The Masquerade - Clanbook: Lasombra (Revised)

"Of course I'm sure I've gone mad. The little man who crawled out of my eye was quite clear on this."

2012 - Most respected evolutionary scientist in the world
2013 - Strange, often xenophobic rants on Twitter began
2014 - Says that some rapes are better than others
2015 - Found in a park, naked, fighting a swan

For the past year, I have been working as an assistant for a visiting researcher. He has been cataloguing his findings about Gravity Falls in a series of journals. I helped him build a machine which he believed had the potential to benefit all mankind, but something went wrong. I decided to quit the project. But I lie awake at night, haunted by the thoughts of what I've done. I believe I have invented a machine that can permanently erase these memories from my mind. Test subject one: Fiddleford.
(shoots himself with memory erasing gun, cut to next recording)
It worked! I can't recall a thing.
(cut to next recording)
I call it the Society of the Blind Eye. We will help those who want to forget by erasing their bad memories.
(cut to next recording)
Today, I came across a colony of little men. Very disturbing. I would like to forget this.
(cut to next recording)
I accidentally hit another car in town today. I feel terribibble - terrible. I've been forgetting words lately. I wonder if there are any negative side effects?
(cut to next recording)
I saw something in the lake! Something big! (tears out hair)
(cut to next recording)
My hair's been a-fallin' out so I got this hat from a scarecrow. Hey, are my pants on backwards?
(cut to next recording)
(laughs maniacally) Yroo Xrksvi - girzmtov!note  (laughs maniacally)
Old Man McGucket, Gravity Falls

http://tvtropes.org/pmwiki/pmwiki.php/Quotes/SanitySlippage