Post-punk fan caught with heroin (4)
I believe the answer is:
goth
'post-punk fan' is the definition.
I can't judge whether this definition defines the answer.
'caught with heroin' is the wordplay.
'caught' becomes 'got' ('get' can be a synonym of 'catch').
'with' is a charade indicator (letters next to each other).
'heroin' becomes 'H' (H is a slang term for heroin).
'got'+'h'='GOTH'
Can you help me to learn more?
(Other definitions for goth that I've seen before include "Uncivilised type" , "Rock music with gloomy lyrics" , "Uncivilised person" , "One of Alaric's people" , "Rocker" .)