* [[ActionGirl Tex]] in ''Machinims/RedVsBlue'' gets this moment when Donut lobs a plasma grenade over an ''incredible'' distance, square into the cockpit of the tank she was driving.
** Everyone is one the receiving end of this at least once, although their reaction is less "oh crap" and more "son of a bitch!"
** In ''Recreation'' Episode 12, Donut is cleaning up Blue Base when he's approached by what he thinks is a new Blue soldier (it's actually the previous season's BigBad, [[TheJuggernaut Meta]].) Donut, being [[HorribleJudgeOfCharacter Donut]], tries to strike up a friendly conversation with it, evading its attempts to kill him by near misses. Simmons then arrives, Donut tells him about the new soldier, which leads to this:
---> '''Simmons''': "What? They sent another team member? Why would they do that? That doesn’t make any sense- ''(sees that it's Meta)'' '''OH, FUCK!''' ''(starts to run away)'' Welcometotheneighborhoodseeyoulater!
** ''Red vs. Blue: Revelation'', Chapter 3:
--> '''Washington''': Do I hear a...
--> ''(Grif drives a Warthog jeep [[DynamicEntry through the wall]])''
--> '''Washington''': CAR?!?
** ''Revelations'' Episode 10 is filled with a ton of them from Grif, Sarge, Simmons and Tucker while they're all in the middle of being on the receiving end of a brutal CurbStompBattle at the hands of Tex.
** When The Meta attaches the memory unit containing the recently captured Tex to his armor.
** The Meta is the living personification of this trope. He even has his own [[http://www.youtube.com/watch?v=tw2VDWB-u2Y Theme music]] which makes the Imperial March, Jaws theme and PsychoStrings look tame in comparison.
** And now try [[http://www.youtube.com/watch?v=Lke056oO3cU this.]] If you thought the last one was pants-wettingly terrifying, then this one makes the previous link sound like a frolic in a happy meadow.
** The OhCrap factor doubles down in subsequent seasons as we see the process that took him from "just" an exceptional supersoldier to an unstoppable force of evil.
* TheDementedCartoonMovie: An underwater diver recites the trope by name upon realizing that the "Bubble Fish" he has been tracking is actually [[ActionBomb Zeeky H. Bomb]].
* ''{{Happy Tree Friends}}'' is a total definition of this trope. Nearly every episode has it's Oh Crap moments (save for just a few). In the fanimation "All Work and No Belay", before Lumpy [[spoiler:falls and rolls into a big snowball]], [[GravityIsAHarshMistress he notices what will happen]] and holds up a sign saying "HELP?".
* In the first episode of ''DSBTInsaniT'', Koden and Asia have a moment when they realize Lisa and Sand Snake are going to crash Koden's party.
** Happens to Koden again in 'The Camping Webisode' when he finds out Killer Monster's name.
* ReverseJurassicPark: Used word-by-word by Mr. Robustus in the fivequel when he realizes that [[spoiler:the giant aquarium he is standing in front of just cracked]]
* ''Machinima/TeamServiceAnnouncement''
** The RED Team in ''[[http://www.youtube.com/watch?v=U9LdJyuWS9g Objectives]]'' when [[spoiler:they hear the Administrator announce that the payload is nearly at the final checkpoint. And they're on the other side of the map.]]
** The Engineer in ''[[http://www.youtube.com/watch?v=n049JQaXAPE Sentry Knockback]]'' when the Medic blocks his Sentry's gunfire. [[HeroicBSOD He doesn't snap out of it]].
** The RED Engineers in ''[[http://www.youtube.com/watch?v=JHOZNRhKBrI Building Placement]]'' when the Demoman destroys all their sentries... just as BLU Team's cart is about to reach the final checkpoint.
* After explaining the backstory, the various narrators of ''WebAnimation/LoreInAMinute'' send the focus game's protagonist off with a "Have fun!". Their reaction is a very upset ThisIsGonnaSuck-type face.
* The reaction of the [[Creator/FourKidsEntertainment 4Kids CEO]] when he realizes that [[WesternAnimation/SonicSATAM Julius Robotnik]] is about to blow him and his company to kingdom come in [[https://www.youtube.com/watch?v=2qDH1hG7tjE Sonic Shorts]].
--> '''Board Member:''' That is, without a doubt, the most ridiculous idea I've ever heard. NO ONE likes Sonic X! NO ONE! Are you PURPOSELY trying to piss people off?
--> '''CEO:''' Yeah, and what are these so-called people gonna do about it? Nah-ne-nah-ne-nah... (bombs appear outside through window) Oh, crud...
* ''WebAnimation/{{Dreamscape}}'': It happens pretty often, such as when Dylan runs into Ethan, but the biggest example is the groups reaction when Keela goes into her SuperpoweredEvilSide.