Loudly criticise pudding getting stick down under (9)
I believe the answer is:
boomerang
'down under' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe you can see a link between them that I don't see?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for boomerang that I've seen before include "Primitive weapon" , "Backfire" , "Aboriginal weapon" , "Aboriginal throwing stick" , "Curved throwing stick" .)