Simply put - a tampon.

Name given due to a tampon's striking familiarity with the bullet shape.
Wife: "Honey, can you get me some vagina bullets while you're down the store? And please don't get super-sized ones in a vain attempt to make the checkout chick think you have a huge cock."

Husband: (awkward silence)
by TMA-1 March 4, 2009
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rape resisting bullets in the vagina (finger tampons)...they are finger tampons that get flipped inside your vagina then when you are feeling uncomfortable when in a room with a guy then you can just shoot him in the face with a bullet (finger tampon) from your vagina....therefor shooting him wid a vagina bullet :P
vagina bullets
by vicloveswill69 November 3, 2013
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