Sure, quit talking on sailor's day off! (5,5)
I believe the answer is:
shore leave
'talking on sailor's day off' is the definition.
I know that 'sailor' relates to this answer.
'sure quit' is the wordplay.
'sure' becomes 'shore' (I can't justify this - if you can you should believe this answer much more).
'quit' becomes 'leave' (synonyms).
'shore'+'leave'='SHORE-LEAVE'
Can you help me to learn more?
(Other definitions for shore leave that I've seen before include "Time off for sailors in port" , "rest of the crew" .)