Reynardine: It behaves that way because she wills it so. That's how a blinker stone works!
Kat: That doesn't explain anything!
Reynardine: It explains enough, doesn't it?
Kat: Ugh! That's a terrible ethic!
Christina: How does a crystal drive a bus?
The Doctor: In a super clever outer-spacey way... just trust me.
— Doctor Who, "Planet of the Dead"
Amy: Are you gonna make her talk again?
The Doctor: Can't.
Rory: Why not?
Amy: Spacey-wacey, isn't it?
The Doctor: Well actually its because the Time Lords discovered that if you take an eleventh dimensional matrix and fold it into a mechanical frame then... Yes, its spacey-wacey!
— Doctor Who, "The Doctor's Wife"
Time Magazine: How does the Heisenberg compensator work?
Star Trek technical advisor Michael Okuda: It works very well, thank you.
—"Reconfigure the Modulators," Nov. 28, 1994
Stan: Jeff?! I thought you drowned!
It is, we learn, an Asian crocodile. "How did he swim across the sea?" a lawman asks, not unreasonably. "They conceal information like that in books," one of the movie's croc lovers answers sarcastically. I dunno; I thought it was a pretty good question.
Zadok: We have ambient light. That means it's coming from everywhere at once. If there's space up there, it's white too.
Zadok: So shouldn't that light be accumulating and blinding us all?
Tailsteak: Light in this universe breaks back down into heat after traveling 1.85 kilometres.
I don't have to explain every little impossible thing to you!
— Dr. Dinosaur, Atomic Robo
"Besides, this is kind of a scifi-y show. We'll think of an excuse soon.