Wake up and photograph Oscar in costume (4,3,2,2)
I believe the answer is:
snap out of it
'wake up' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'photograph oscar in costume' is the wordplay.
'photograph' becomes 'snap' (synonyms).
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' means one lot of letters goes inside another.
'costume' becomes 'outfit' (I've seen this before).
'o' going inside 'outfit' is 'outofit'.
'snap'+'outofit'='SNAP OUT OF IT'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for snap out of it that I've seen before include "quickly recover" , "cheer themselves up?" , "Come to" , "suddenly give up" , "What one raiding photo album may take" .)