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Like a Venus-Fly Trap, this genital deformity is A fully developed vagina with a penis arising from the vaginal orifice. So, when you open it up, an erect penis shoots out. Often giving you a black eye (if oral sex was the plan).
Chris: Hey man, watch out for Cami, I totally heard that she's gotta Vanenis.
Matt: Yeah, I know. HOw'd you think I got this black eye?
Chris: It's ok man, we all make mistakes.
*Matt begins to cry.
by tifroc April 24, 2008
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