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2 definitions by Avi G

 
1.
Displaying one's penis, usually in public, often discreetly (for example by letting just the tip hang out of the fly of the pants) - not a sexual thing but more usually as a joke or a visual statement of derision.
<showing pictures from his European trip) "Hahaha and here's me Shining next to the Eiffel Tower!"
by Avi G October 28, 2010
 
2.
An adept at the art of Shining; one who exposes his member as a joke or act of derision.
OMG did you see? That guy's dick is hanging out of his pants! He must be a Shiner
by Avi G October 30, 2010