Crumpled blouse found during party for couples (7,2)
I believe the answer is:
doubles up
'couples' is the definition.
Although both the answer and definition are verbs in their -s form, I don't see how they can define each other.
'crumpled blouse found during party' is the wordplay.
'crumpled' is an anagram indicator (a crumbled or damaged version of the letters).
'found during' indicates putting letters inside.
'party' becomes 'dup' (Democratic Unionist Party).
'blouse' is an anagram of 'oubles'.
'oubles' put inside 'dup' is 'DOUBLES UP'.
'for' acts as a link.
Can you help me to learn more?
(Another definition for doubles up that I've seen is " Shares a room".)