Re: Who cleans up everyone's quarters after each space battle?
And also a line about using the bathroom like "Where's the Captain?" "He's in the head at the moment--he should be out momentarily," and then we see him step out of the Lavatory compartment located on the bridge.
TNG euphemized this with "I'll be in my ready room."
Dr. Howard, Dr. Fine, Dr. Howard: For duty and humanity! --Men in Black (1934)