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.
Short for 'devastated', but people almost always use it jokingly about something small that let them down. You're not actually heartbroken, just a bit bummed.
The café ran out of banana bread before I got there, I'm devo.