This happened to me in the late sixties:
TECH LOG ENTRY: This cockpit is so dirty that it is not even fit for pigs to sit in.
REPLY: Cockpit cleaned and now fit for pigs to sit in.
Next day I was called by the Chief Pilot for a reprimand but we ended up having a good few tinnies that evening.
REMEMBER FLYING IS THE SAFEST WAY TO FLY