Who cares if porker given pork pie? (2,4)
I believe the answer is:
so what
'who cares' is the definition.
(I've seen this before)
'porker given pork pie?' is the wordplay.
I cannot really understand how this works, but
'pork pie?' could be 'hat' (pork pie is a type of hat) and 'hat' is found within the answer.
The remaining letters 'sow' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'if' is the link.
Can you help me to learn more?
(Other definitions for so what that I've seen before include "It's unimportant, right?" , "Big deal!" , "Does it matter?" , "I'm not interested" , "It's unimportant, who cares" .)