Same for Air Stewardesses etc who perhaps being stationed adjacent to a Female loo whatever must have overheard their share of chastisements in the good old days.
Reminds me of an incident in a Paddington Hotel when a couple of American brats had played up all night outside their parents’ room.
Next morning we awoke to pass the room on the way to the bathroom.
There door was ajar.
From inside came a curious noise of slow slap sounds accompanied each time afterwards by a hissing intake of breath sound,
We couldnt see what was going on buy strongly suspect just desserts were being dished out.
At that very moment a attractive female receptionist came up to deliver breakfast
on a tray and she didnt blink an eyelid to whatever was going on in there as she
came out after delivering the tray!