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1 definition by Jessy S,

 
1.
When a person loses a significant amount of weight and develops loose skin on the belly, it looks like vaginal lips when they bend over and the skin hangs down. Typically, the vaginal lips are centered around the belly button.
"I'm dating this guy who used to be really fat, which, as a bisexual is nice... because he has both a penis and bellgina."
by Jessy S, October 12, 2007