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2.
The anniversary of your sex change surgery.
Me: Hey, on Friday, I will have been post-op for a year.
A friend: Happy Vaginaversary!
by A Transsexual Woman June 28, 2010
 
1.
The day of your birth.
August 18 is my vaginaversary
by dakotaben August 22, 2008
 
3.
Point in time marking/remembering the date you got a piece of her ass.
If I remember correctly, March 16th is our 1 month vaginaversary.
by sweetgy June 27, 2009