1 definition by timzep

Top Definition
A rock band based in Melbourne, Australia, who strikingly resemble someone stuck in a forest for a century (see above).
When in the presence of alcohol the 4 members have been known to become aggressive and immature, possibly resulting in ejection from a live music venue.
Guy 1: Hey dude you goin to see Wilderbeast on the weekend?

Guy2: Hell no! They're a bunch of Ass Banshees

Guy3: Yeah, you're right. Let's sit in a gutter drinking goon instead.

ass bansheegoon
by timzep March 14, 2011

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