Speak to jerks after wife, showing chink in armour (4,4)
I believe the answer is:
weak spot
'chink in armour' is the definition.
I know nothing about this answer so I can't tell whether this works.
'speak to jerks after wife' is the wordplay.
'jerks' is an anagram indicator (I've seen 'jerk' mean this).
'after' means one lot of letters go next to another.
'wife' becomes 'w' (abbreviation).
'speak'+'to'='speakto'
'speakto' with letters rearranged gives 'eakspot'.
'eakspot' after 'w' is 'WEAK SPOT'.
'showing' acts as a link.
Can you help me to learn more?
(Other definitions for weak spot that I've seen before include "'Your area of vulnerability (4,4)'" , "Area of deficient knowledge" , "Point of vulnerability" , "Achilles heel?" , "Gap in knowledge" .)