Transfer female - it's done very quickly (4,4,4)
I believe the answer is:
hand over fist
'quickly' is the definition.
(thesaurus)
'transfer female' is the wordplay.
'transfer' becomes 'hand' (handing is a kind of transfering).
'female' becomes 'overfist' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'hand'+'overfist'='HAND OVER FIST'
'it's done very' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hand over fist that I've seen before include "Rapid rate of money-making" , "(E.g. make money) very easily" , "With steady and rapid gain" , "making steady gains" , "(Gain) rapidly" .)