The Doctor, Donna and others in “The Runaway Bride”

Guess what I've got, Donna? [holds up the roboform remote control] Pockets!

[surprised] How did that fit in there?

They're bigger on the inside.

Roboforms are not necessary. My children may feast on Martian flesh!

Oh, but I'm not from Mars.

Then where?

My home planet is far away and long since gone. But its name lives on: Gallifrey.