[C-3PO and R2-D2 are first seen walking in the underground base on Ice Planet Hoth]
C-3PO: I didn't ask you to turn on the thermal heater. I merely commented that it was freezing in the princess's chamber...
R2-D2: [Chirps his objection]
C-3PO: But it's SUPPOSED to be freezing! How we are ever going to dry out her clothes, I really don't know!