Precision F-Strike/Fan Works

"After my jaw dropped for a few seconds, I decided it was time to sum up this entire situation in a very simple and succinct phase. "You're fucking nuts.""
 * The Ranma ½/Teen Titans crossover duology Dark Titans uses a Precision F-Strike as a Crowning Moment of Awesome; near the end of The Titans and the Lost Boy, Brother Blood has a laser blade to Kasumi's neck, and has ordered the Nerima Wrecking Crew and his rebellious students -- including some of the Nerima regulars, themselves recruited earlier in the story -- to kill the Titans or else. Both sides appear to be hopelessly stuck... until Kasumi quietly calls Blood... something... and shocks him so badly that she's able to break his grip and judo throw him.
 * My Immortal: "WHAT THE HELL ARE YOU DOING YOU MOTHERFUKERS!" Shocking because it's the Dumbeldore's Incoming Ham moment.
 * Yea verily, though I charge through the valley of the shadow of death, I shall fear no evil, for I am driving a house-sized mass of "fuck you."
 * "Look me in the eyes, Light damn you!"
 * Pulled off to great effect by Hinata in Team 8: "That's bullshit!" (pause, slaps hands over mouth)
 * "DON'T CALL ME PIT, DAMMIT!"
 * Finishing the Fight
 * Those Lacking Spines, about entering Voreland: "ABSOLUTELY FUCKING NOT!"
 * If you can get the DC Nation universe version of Connor Hawke to the point of swear words, it's usually one of those.
 * For the most part, the Shocker fan fic Polarity avoids any swearing worse than "damn" or "crap." Even after fighting zombies, avoiding heroes, brawling with villains, and getting his ass handed to him night in and night out, Herman Schultz and company keep the language tame...until

""Do you understand now? We're not going to a fucking walk in the park. This is not a goddamned picnic.""
 * In Pretty Cure Heavy Metal episode 24, Shugo fakes an Australian accent and lands a precision N strike in a parody of the N word privileges supposedly held by white Australians. The rest of the N words are spoken by the token black, who has all the N words in episode 25.
 * Later, in episode 51, Shugo drops an uncensored F bomb right before, just to maximize the impact.
 * In Kira Is Justice: "Oh crap." Bear in mind that the author almost never uses any curse words in his writing. Not even "stupid".
 * In Relationships Series story "Pain", Shamal asks "what the hell happened" to a badly injured Yuuno. Vita notices that this is the only time she has heard Shamal swear.
 * Takeru Takaishi from the Tamers Forever Series delivers one of these:

"Draco: You can't kill a fucking demon with a pillow!"
 * Elemental Chess Trilogy: "You leave my family alone, you cowardly son of a bitch!" It's a Crowning Moment of Awesome for the speaker, and an odd sort of Crowning Moment of Heartwarming since the "family" in question are the speaker's True Companions. It's also the only time in the entire series that anyone uses a swear word other than "damn."
 * Harry Potter: Draco nails this trope in Yea, Though I Walk when he  The cursing and Draco's grief due to   really highlight that the situation seems completely hopeless.

"JoJo: "What the talk are you fucking about?""
 * In another Harry Potter fan fic straight-laced Percy realizes that . His mental response: "Oh, shit."
 * The Gift: While other characters seem not to mind colorful language, JoJo...doesn't. Except when the invisible hologram explains that she's part of a time experiment gone awry, she combines it with a spoonerism:

"Matt: I'm getting a codename. Mello: You're kidding me
 * In Hogyoku Ex Machina, after being told by Ichigo (who has traveled from the future) that his plan to, Gin's eyes are wide open and he says, “Well....shit.”
 * In the fifth chapter of this Death Note fanfic, Mello finds out that Matt scored a lot higher than he'd assumed. It turnes out

Matt: Nope

Mello: So that means...

Matt: That means for Halloween, you're going as Peach.

Mello: Shit."

"Phoenix Wright: Dammit! She knows! Twilight Sparkle: Phoenix! Language!"
 * In Turnabout Storm, from Phoenix Wright's part right after he discovers that Trixie, the prosecutor of the case, knew about Rainbow Dash's possible motive.

"Garrus: I don't say this often, so understand that I really, really mean it: go fuck yourself."
 * Mass Effect Interregnum:

"Sakura: FUCK. YOU."
 * Naruto Veangance Revelaitons is typically far too laden with profanity to qualify, but one happens in

"Akira: "Help me to understand here, Lilly, because right now I’m getting really fucking scared. I’ve never seen you like-” Lilly: “That’s bullshit. .”"
 * The first sentence of Ccapter seven (or six, not counting the prologue) of KOTOR The Prodigy Of Revan Book One ends with Carth noting Jack's mood isn't the most ...civil.
 * Considering the whole  circumstance, it's understandable
 * In Pretty Cure Hollywood Stars, Lina gets a Precision Black Strike, and because she's white it is NOT the N word (it's been stated numerous times in-story that she isn't racist, though she does drop an epiphet from time to time and gets called on it by either one of the other characters or the narrator). Here's a hint: think Clint, for whom the author named her.
 * In Reconciliation, this happens at two different points in a single chapter, as Lilly.

"Firefly: You know what? TO HAY WITH YOU!"
 * In Ace Combat: The Equestrian War, Firefly does two F-Strikes, both being aimed at Rainbow Dash. There are different reasons for it, however.
 * In chapter 12, while Rainbow is suffering from a Heroic BSOD:

"Firefly: I CAN’T CALM THE BUCK DOWN!"
 * In chapter 16, when Rainbow tries to calm her down:

""Forgive me for saying this, but holy shit!" Andy said."
 * Night of the Seance has this moment upon finding out what had happened to Frida.