Bagging someone out

The Aussie way of talking shit about someone or saying someone thing bad about someone

Jessie keeps bagging someone out, she needs to be nicer, what did they ever do to her?

hanging its bag out

The object in question is approaching a point of inevitable failure.

A car approaches, smoking, rattling and is obviously going to break down.
Dude 1: Dude, that car sounds awful!
Dude 2: Its hanging its bag out!