Sunny side down? (5)
I believe the answer is:
south
'sunny side' is the definition.
(I've seen this in another clue)
'down?' is the wordplay.
I cannot quite see how this works, but
'down?' could be 'out' (similar in meaning) and 'out' is found in the answer.
The remaining letters 'sh' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for south that I've seen before include "Direction to the right of sunrise" , "Down on a map" , "Compass point" , "1949 musical by Rodgers and Hammerstein, made into a film in 1958" , "Antarctica" .)