'''Basic Trope''': An incident of [[FriendOrFoe friendly fire]] resulting from someone taking a friend by surprise.
* '''Straight''': Alice is sneaking around the house in the dark with a baseball bat, thinking there's a burglar in the house. It's really her boyfriend Bob, who walks up to her in silence and taps her on the shoulder. *THWACK*.
* '''Exaggerated''': Alice whirls around and beats Bob to a pulp in blind terror before she realises who it is.
* '''Downplayed''': She turns around, bat raised, but notices who's there and stops herself before angrily rebuking him for scaring her.
* '''Justified''': There really is a killer in the house, and Alice is right to be jumpy... but Bob can't risk calling out to her in case he alerts the bad guy.
* '''Inverted''': Alice sees a shape facing away from her, and sneaks up behind it. She tells the intruder to turn around slowly, and jumps out of her skin when she recognises Bob.
* '''Subverted''': Alice [[CatScare just stops herself hitting Bob, and sighs in relief]]. Cue Bob's PsychoticSmirk as he sticks a knife in her chest.
* '''Double Subverted''': Alice just stops herself hitting Bob, and sighs in relief. Then she beats the shit out of him for giving her such a fright.
* '''Parodied''': Alice has been on guard all night, keeping herself awake with KlatchianCoffee. Every single stimulus makes her freak out and run screaming at it, baseball bat swinging.
* '''Zig Zagged''': Alice goes on a prolonged hunt through the dark house. She gets a CatScare, starts WalkingBackwards straight towards a shadow in the corner, the shadow reaches out, and *POW*, she knocks out... Bob! That fool, why didn't he say something!? Oh, he was trying to be quiet because ''the killer is in there too'' - we can see him sneaking up on Alice as she tends to an unconscious Bob...
* '''Averted''': Bob sees Alice on the prowl and wisely decides to call out to her across the room.
* '''Enforced''': The writers need a believable reason for Alice to kill Bob, her one true love who's never done anything to hurt her.
* '''Lampshaded''': "DontSneakUpOnMeLikeThat!"
* '''Invoked''':
** Bob knows that once Alice's UnstoppableRage is in progress, the only thing that will snap her out of it is if she harms a friend, so he resolves to take the hit.
** Alice is a secret agent undercover as a wimpy civilian. Bob wants to blow her cover.
* '''Exploited''': ???
* '''Defied''': "Oh god, Alice is in {{Berserker}} Mode again. I'll go give her a CooldownHug." "Are you crazy? You'll get yourself killed!"
* '''Discussed''': ''[Alice feels a hand on her shoulder]'' "[=PleasebeBob=], pleasebeBob, pleasebeBob..."
* '''Conversed''': "Oh, don't walk up behind her, you idiot!"
* '''Played For Laughs''': Alice is playing Grandmother's Footsteps. Despite knowing the rules perfectly well, her reflexes take over whenever anyone taps her on the shoulder, and before long no-one ''wants'' to sneak up on her.
* '''Played For Drama''': Alice ends up dealing Bob a fatal blow when he surprises her, leading to a severe MyGodWhatHaveIDone reaction that send her past the DespairEventHorizon.
AAAH! Oh, it's you! Get back to DontSneakUpOnMeLikeThat!
%% Optional items, added after Conversed, at your discretion:
%%* '''Deconstructed''': ???
%%* '''Reconstructed''': ???
%%* '''Plotted A Good Waste''': ???