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1.
To put a condum on your thumb and insert it into a vagina in a repetivie motion, imitating the usage of a penis.
He was too drunk to have sex with his girlfriend, so he just rubined her the whole night.
by peacepony July 24, 2008
 
2.
To be "Rubined" is to be derided in a slightly humorous but ultimately patronizing way, usually by a smirking shake of the head or similar sign of bemused disappointment. "Rubining" is performed by a male after his neurotic or offbeat male companion makes a social faux paus in the company of the opposite sex.
Offbeat Friend: So anyways, my masturbation schedule...

Females react with shock and dismay

Rubiner: (Shaking head with a vague smirk on face, as if to signal friend to desist from speaking...This friend has been effectively "Rubined")
by Pelicano July 25, 2006