Old man and wife doubled up for something seedy (6)
I believe the answer is:
pawpaw
'something seedy' is the definition.
I can't judge whether this definition defines the answer.
'old man and wife doubled up' is the wordplay.
'old man' becomes 'pa' (both can mean someone's father).
'and' means one lot of letters go next to another.
'wife' becomes 'w' (abbreviation).
'doubled up' indicates the doubling of some letters.
'pa'+'w'='paw'
'paw' doubled is 'PAWPAW'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for pawpaw that I've seen before include "foul once" , "Papaya" , "Custard apple tree" , "Fruit" .)