Top Definition
the simple act of putting about half a cup of baking soda into a womans vagina and then taking a turkey baster and shooting some vinegar up and into her vagina, shake well, and watch the scientific process of a real live volcano erupting in front of your eyes
>man, billy stole my idea of a volcano for the science fair. what should i do?
<dude you should use your mom instead of a volcano and make a vagicano
>sweet.
by Errrn October 14, 2006

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