clipped from: en.wikipedia.org   

Vagina dentata is Latin for toothed vagina. Various cultures have folk tales about women with toothed vaginas, frequently told as cautionary tales warning of the dangers of sex with strange women.

The vagina dentata appears in the myths of several cultures. Erich Neumann relays one such myth in which “A fish inhabits the vagina of the Terrible Mother; the hero is the man who overcomes the Terrible Mother, breaks the teeth out of her vagina, and so makes her into a woman.”[1]

Although the myth is associated with the fear of castration, it is often falsely attributed to Sigmund Freud
Anti-rape female condom
In 2005, inventor Sonette Ehlers introduced The Rapex, an anti-rape female condom which can be inserted into the vaginal canal like a diaphragm. The product is lined with microscopic barbs which attach to a rapist's penis and which must be surgically removed
clipped from: www.rapestop.net   
RAPEXTM is a device used by women to prevent rape and to identify the rapist.