Hyperbola

My room, 10.30 pm, hovering near the computer:
Younger sister: (out of the blue) I learnt a new word today.
Saima: What?
Younger sister: Hyperbole
Saima: That’s a new one.
Younger sister: You don’t know?
Saima: Well, I’ve heard of hyperbola in maths.
Younger sister: It’s like exaggeration, like, “I was waiting for ten years” when it was only ten minutes.
Saima: But that’s just exaggeration.
Younger sister: No, no, no, like “I’d walk a thousand miles for you”.
Saima: No, that’s just bullshit.