barbecue stopper
noun/ˈbɑːbɪkjuː stɒpə(r)/
/ˈbɑːrbɪkjuː stɑːpər/
(Australian English, informal)- a topic of conversation that is very interesting, often one on which people have different views
- Work-life balance is a barbecue stopper for Australians.
Check pronunciation:
barbecue stopper