Make another judgement about girls going topless in front of son (8)
I believe the answer is:
Here is my best explanation:
'make another judgement' is the definition.
'girls going topless in front of son' is the subsidiary indication.
'girls' becomes 'lasses' (lass is a kind of girl).
'going topless' means to remove the first letter.
'in' means one lot of letters goes inside another.
'front of son' becomes 'res' (I can't explain this - if you can you should give a lot more credence to this answer).
'lasses' with its initial letter taken away is 'asses'.
'asses' placed inside 'res' is 'reassess'.
'about' is the link.
(Other definitions for reassess that I've seen before include "Examine again", "judge again", "Rate afresh", "Appraise again", "Judge again", "think again", "Estimate value once more", "Again evaluate", "Newly evaluate" and "Further evaluate".)