Fallacy of the Talking Killer. The villain wants to kill the hero. He has him cornered at gunpoint. All he has to do is pull the trigger. But he always talks first. He explains the hero's mistakes to him. Jeers. Laughs. And gives the hero time to think his way out of the situation, or be rescued by his buddies. Cf. most James Bond movies.
Future!Shego: Well Kimmie, it's been real. Erase them from history!
Future!Drakken: What?! No taunting?! No "how did I do it" speech?! Oh, poor supervillain form, Shego!
Future!Shego: Ya think?
Future!Drakken: Most definitely. What's the point in ruling the world if you don't stop to smell the roses?
I see. You're one of those boring maniacs who's going to gloat, hmmm? Are you going to tell me your plan for running the universe?
Phantom Limb: The lair of the Phantom. Behind these modest walls lies the most technologically advanced system of controlled evil in existence. (Gripping orchestral music starts playing) You, sir, are sitting smack dab in the middle of location B for the Guild of Calamitous Intent!!! (Music ends abruptly)
Brock: You like doing that, don't you?
Phantom Limb: Oh yes, next to the 'Behold-A-Giant-Walking-Death-Ray' speech, the 'Welcome-To-Hell' speech is my favourite.
Frozone: "One more zap of this Death Ray and I'm an epitaph. Somehow, I manage to find cover and what does Baron von Ruthless do?
Mr. Incredible: He starts monologuing.
Frozone: He starts monologuing! He starts like, this prepared speech about how feeble I am compared to him, how inevitable my defeat is, how the world will soon be his, yada, yada, yada, yammering! I mean, the guy has me on a platter and he won't shut up!"
Waiting for him to continue, Bond took the measure of his enemy. He knew what would be coming — justification. It was always so. When they thought they had got you where they wanted you, when they knew they were decisively on top, before the knock-out, even to an audience on the threshold of extinction, it was pleasant, reassuring to the executioner, to deliver his apologia — purge the sin he was about to commit.
— Ian Fleming's You Only Live Twice
If you have to look along the shaft of an arrow from the wrong end, if a man has you entirely at his mercy, then hope like hell that man is an evil man. Because the evil like power, power over people, and they want to see you in fear. They want you to know you're going to die. So they'll talk. They'll gloat. They'll watch you squirm. They'll put off the moment of murder like another man will put off a good cigar. So hope like hell your captor is an evil man. A good man will kill you with hardly a word.
— Terry Pratchett, Men at Arms
Villains, they always want to talk you to death.
— Wall Flower, The Transfer Students
Imagine the brain as a vast mansion with...oh, let's say a million rooms. A million locked doors and a million keyholes. And yet, how few of those rooms we ever enter. Until now. My psycho-chemicals have begun to open all of the locked doors in my head. I'm tapping the 90% of the brain we never use and it's giving me such...wonderful ideas. I've finally done it. The Justice League are mine. Their thoughts belong to the Key. And with their help, I shall open the doors onto a new universe! Oh, and make a note of an interesting side effect of my expanding consciousness. I can't stop talking to myself.
— The Key, JLA #8
I've really got to learn to just do the damage and get out of town. It's the stay-and-gloat that gets me every time
— Ethan Rayne, Buffy the Vampire Slayer
Jack: I'd love to stay and gloat, but I'm told I do too much of that.
Wuya: Oh, so true.
"Oh, but of course! If there's anything I love, it's gloating!"
"Let me tell you how important it is to keep your mouth shut. Me, I've seen so many damn people going on and on about 'these will be the last words you ever hear' and 'take these words with you to the afterlife,' and then that gives whoever they're fighting an opening to strike back. Crazy, isn't it? I see it all the time, in books, in plays, even in real life! I don't even know why, but somehow the more comfortable someone is with killing, the more they flap their mouth when it comes time to do the deed, yakking on and on and on. As you might have guessed, I myself happen to be such a person! And therefore, as such, in light of that revelation, I'll say that one is enough, and since that one is of course myself, I want you all to shut up. You're boring. Swallow those words and take them to the afterlife yourself if you want them delivered there so damn much."
— Ladd Russo, Baccano!! 1934 - Alice in Jails
Why do they always talk so much?
— Bruce Wayne, Batman Beyond
It must be the first by-rule of the wacko-psycho killers' union: "Immobilize the good guys (preferably, spread-eagled) and subject them to paranoid ravings."
Licht is running true to form.
— Johnny Blaze, Blaze #5
And no one knows a thing about my life
I can come and go as I please
And if I want to, I can stay
Oh, or if I want to, I can leave
Nobody knows me, Nobody knows me, Nobody knows me
Typical master criminal, loves the sound of his own voice. [...] Gloating is a sign of insecurity, Ludwig. Stop it.
— Edmund Blackadder, Blackadder II