Its is where a man sticks his ball sack in to a woman's Vagina. The man is using the same technique as fingering but instead of using a finger he uses his ball sack. The man can also wriggle his balls around inside of the pussy from more pleasure.
Ohh man i like Vaginaballs because it feels nice when i wriggle my balls in her Vagina
when your best friend doenst realize that her plot to convince another girl that she is a man jsut so she can get somelesbian action is ruining your friendship