Yubbish (Yuppie Rubbish) is best described as the discarded, but often useful and/or tasteful items from mid-upper and upper class homes.
Apparently the best times to find yubbish is just prior to local council 'hard rubbish' collection weeks, where nature-strips suddenly fill up with all manner of discarded items, from broken vases to audio/visual equipment.
"Man I was cruising through Toorak the other week when I scored this awesome yubbish CD Player!"
The act of a male gorilla on an elevator laying eggs while eating a cat tongue covered in mayonnaise, deep fried in frog guts and melted marshmallows. All of this goes on while he performing a Charizard.
Guy 1: Dude, did you see the annual yubbis last night?
Guy 2: Nah, man. That is way to disgusting for me.
Guy 1: It is disgusting, but people's reactions make it so worth it!