DOCTOR: That gesture you did. Yes, that's the one. It's presumably to ward off evil. It's interesting because it's also the sequence for checking the seals on a Starfall Seven spacesuit. And what makes that particularly interesting is that you don't know what a Starfall Seven spacesuit is, do you.

(The Doctor holds a jelly baby under the nose of the red-haired warrior.)

DOCTOR: Now drop your weapons, or I'll kill him with this deadly jelly baby.