I remember when an article about the prototype made a thread here on Newgrounds...Ozcar said he'd buy three. Good times. Anywho, OP, Nice copying and pasting from Cracked.com :P.
While I think that rapists totally deserve that, and much more, what woman would seriously wear one of these around? If you're that afraid of being raped, carry a taser, or get a concealed weapons permit, or something. Not to mention, what if the woman forgets to take it out and tries to sleep with her significant other, or picks up somebody and tries to sleep with them? Or, worse yet, what about the woman who picks up people, seduces them, and then smiles as they scream in pain the second their penis goes into her vagina.