If Mentioned Before I Apologize.
Lufhansa Pilot to co-pilot, forgetting that the frequency was open: "We used to come up the Thames, and turn over here for the docks...."
Voice on frequency: "ACHTUNG SPITFEUR"
Novice female military controller to US bomber leaving radar coverage, forgetting the correct terminology... "You are entering my dark area"
USB: "WHOOPEE!"
Tower Controller: "BA356, proceed to stand 69"
BA: "Yes, Sir, Nose in or Nose out?"
Brilliant!