From The Doctor Dances:
Captain Jack Harkness: Okay, this can function as a sonic blaster, a sonic cannon, and a triple-fold sonic disruptor. Doc, what you got?
The Doctor: I've got a sonic, er, never mind.
Captain Jack Harkness: What?
The Doctor: It's sonic, okay, let's leave it at that.
Captain Jack Harkness: Disruptor? Cannon? What?
The Doctor: It's sonic, totally sonic. I am soniced up!
Captain Jack Harkness: A sonic what?
The Doctor: Screwdriver!
Captain Jack Harkness: Who has a sonic screwdriver?
The Doctor: I do!
Captain Jack Harkness: Who looks at a screwdriver and thinks, "Ooh, this could be a little more sonic."?
The Doctor: What, you've never been bored?
The Doctor: Never had a long night? Never had a lot of cabinets to put up?
Captain Jack: Ah, sweet, look at these two. How come I never get any of that?
The Doctor: Buy me a drink first.
Captain Jack: You're such hard work.
The Doctor: But worth it!
Margaret: Dinner in bondage. Works for me.