Rose Tyler: You pulled his arm off!

Doctor: Yep, plastic.

Rose Tyler: Very clever, nice trick. Who are they, students? A student thing?

Doctor: Why would they be students?

Rose Tyler: I don't know!

Doctor: You said it. Why students?

Rose Tyler: 'Cos... to get that many people dressed up and being silly they got to be students.

Doctor: That makes sense. Well done.

Rose Tyler: Thanks.

Doctor: They're not students.