(The Doctor in his TARDIS chases Donna's taxi, which is being driven by a robot Santa, down a busy motorway)
The Doctor: Listen to me, you've got to jump!
Donna: I'm not jumping on a motorway!
The Doctor: Whatever that thing is, it needs you. And whatever it needs you for, it's not good. Now come on!
Donna: I'm in my wedding dress!
The Doctor: Yes, you look lovely. Come on!