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1.
A Penis-Vagina.

Used when someone has a very small penis, is a transexual or has both a penis and a vagine. Therefor it is a Panina.
He/She has a panina!
by KillerBunny345 August 21, 2007
10 8
 
2.
When the penis is so far up the vagina it becomes like one.
*moaning* O- oh i think we have a panina
by Popsicleprincessa June 29, 2009
2 8