1. An expression of discontent
2. Describing someone/something in a negative way
Rashybone is usually used in reference to poor surf conditions. The term was originally coined by the notorious "Z Boys" of helensville, New Zealand
Also, see rashy.
Fag: "Not really,ae."
Mayonazi: "Pssh! fuck thats rashybone."
Colossal: "Yo Parrot is the surf pumping?"
Parrot Nose: "Nah bo, its small as and onshore. Fucken rashybone, ae."