Y'know. Teaching men and boys about consent would prevent a lot of rapes.
Teaching them that, y'know... acting like a decent human being doesn't give you entitlement... that would prevent a lot of rapes.
Again. How do you prevent the 80% of rapes carried out by someone the victim knows and trusts? Or how do you prevent the woman from getting raped anyway, regardless of whether the rapist had a chance to spike her drink... Because, if a rapist wants to rape, he'll do it regardless of whether he's spiked his intended victim's drink