This female condom resembles a tampon that used as rape prevention by hooking onto an attacker's penis, hurting and disabling him. It's from the idea from a South African woman - Sonette Ehlers who had been inspired by the concept of 'having teeth in the vagina' and a excruciating scene of a man in pain when his jewels caught in his trouser zip.
This product will be expected on the market on late 2006 if severe critism is overcome. There's a hope to protect women from rape.
Link - Rapex - The Anti-Rape Condom & Wikipedia