Tenth Doctor Month: Quote Of The Day #15

Martha: What's that thing?
The Doctor: Sonic screwdriver.
Martha: Well if you're not going to answer me properly.
The Doctor: No really, it is. It's a screwdriver and it's sonic. Look.
Martha: What else have you got, laser spanner?
The Doctor: I did, but it was stolen by Emily Parkhurst. Cheeky woman. 

Smith And Jones (2007)