Someone seen as rough around the edges and unsophisticated, kind of like a British chav or an American redneck. It can be a put-down, but plenty of people use it fondly or even call themselves one.
Mullet, flanno and a ute with a massive sound system, he's a proper bogan.
Someone who's lazy and dodges work or effort, often leaving others to pick up the slack. A 'dole bludger' is someone people reckon is living off welfare without trying to get a job.
Get off the couch and help with the dishes, you bludger.
A wasteman is a useless, unreliable or clueless person, usually a guy, the type you can't count on for anything. If it's a girl, people say 'wastegal'.
He said he'd pay me back last month and still nothing, proper wasteman.
If something's mid, it's just okay at best, nothing special and kind of disappointing. People use it to throw light shade at food, movies, music, or pretty much anything that got hyped up but didn't deliver.
Everyone said that burger place was amazing, but honestly it was mid.