At home, consider it inappropriate to show boob (12)
I believe the answer is:
indiscretion
'show boob' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'at home consider it inappropriate' is the wordplay.
'at home' becomes 'in' (similar in meaning).
'inappropriate' indicates anagramming the letters (an improper or inaccurate order for the letters).
'consider'+'it'='considerit'
'considerit' with letters rearranged gives 'discretion'.
'in'+'discretion'='INDISCRETION'
'to' acts as a link.
(Other definitions for indiscretion that I've seen before include "Tactless remark or action" , "Tactless deed" , "Careless Whisper" , "Rashness" , "Faux pas" .)