Below/above stairs British old-fashioned
(Below stairs) at or in the basement of a mansion, deemed as the area where the servant worked and lived.
This story gives me insights into the life below stairs at Buckingham Palace.
The rich kid wants to experience the life below stairs.
(Above stairs) on the upper floor of a mansion, deemed as the area where the owner of the house and his/her family resided.
The son of the servant asked him what the life above stairs looks like.
The servant is feeding the cat that belongs to the people who live above stairs.
The origin of this phrase is not clear.
White lie
Ken: Yesterday I lost the watch that my girlfriend presented to me. Should I tell her this thing?
Lily: Certainly Not! Your girlfriend will be angry with you. Children and fools tell the truth.