Woman taking local dope is the butt of a joke (5,4)
I believe the answer is:
april fool
'a joke' is the definition.
(April fool is an example)
'woman taking local dope is the butt' is the wordplay.
I cannot quite see how this works, but
'woman' could be 'april' and 'april' is present in the answer.
The remaining letters 'fool' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for april fool that I've seen before include "One taken in" , "Seasonal victim" , "Spring hoax victim" , "gullible person" , "Spring dupe!" .)