Okay, “trash” can be both a noun and a verb (trashes, trashed, trashing), so why not “rubbish”? Although it did strike me as odd when I read it as a headline in today’s New Indian Express newspaper.
The internets seem to agree rubbish used as a verb is informal or “British slang.”
PS I realise the risk in posting any grammar comments given the typos and errors throughout my own blog. Yes, this is the pot calling the kettle black.
Dez in India 
An American commenting on proper English. Oh, the irony! 😉
PS we do say rubbished in Australia. 😀