DOCTOR: Do you know a girl called Penny?

BILL: Well, yeah.

DOCTOR: What's she like?

BILL: Out of my league.

DOCTOR: No.

BILL: Sorry, what? No?

DOCTOR: No.

BILL: What does that mean, no?

DOCTOR: It means I'm a scary, handsome genius from space and I'm telling you no, she's not out of your league.