South African doctor invents female condoms with 'teeth' to fight rape

0 (as in z-e-r-o) reviews?!?

What does that have to do with the anti-rape female condom?

Welcome to ignore. Say "Hi" to GreenVegas!

Ouch, first the squeezing ball discussion now the female condoms with teeth...

Unfortunately, I think if a women wore this and it bites the guy's dick, he would get pissed and assault her. Not sure which is worse assault or rape. Sad situation either way.

"Can the condom accidentally hook into my own skin? Will it cause permanent damage to the rapist?"

No, the design is of such that the condom cannot turn inside out, you do not have to fear.
Your second concern. No, it will not cause permanent damage to the rapist he will have tell tale little scars on him. (He will have some explaining to do to his wife or girlfriend how he encountered those scars.)

I did not follow the link. But is the World Cup event noted for frequent instances of such crime?

I don't think it's the World Cup, per se, but rather the location.