"Coin operated self-destruct... Not one of my better ideas."
— Plankton, SpongeBob SquarePants
Keitaro: Why'd you put in something like that!?
Suu: You know, that's just something mad scientists do.
"I know your UNATCO killphrase: Laputan Machine."
— JC Denton, Deus Ex
Oglethorpe: Ours is voice-activated! All you have to do is say "explode", and it does just that!
Computer: 5, 4, 3, 2...
Phineas: Everything's wired through this self-destruct button. Do you even need that?
Doofensmirtz: Well, of course I need- [Beat] Wait a minute; no, I do not need that. You are absolutely right!
"Well unless you've got any more bright ideas," said B'Ellen. "I suggest we go to Plan Flee. Big Brother, where's the self-destruct mechanism?"
There was a long silence from the computer.
"Why?" Big Brother asked suspiciously.
"Err...we just want to look at it," B'Ellen mumbled.
"Um, yes," said Kaneway. "We've er, never seen a self-destruct mechanism before."
"You cowards," fumed the computer. "You want to destroy the ship and run away. If I were a HAL-9000 I would kill you where you stand!"