Ah yes, the good old days, when "roofie" was short for "consent."
People throw around the term "roofie" a lot where it doesn't belong though. I personally have 2-3 friends with stories about times they were supposedly roofied, and have heard stories from far more people than that. For most of them there would seem to be no point to drug them. For one thing they're all men, and male rape is such an infrequent occurrence that I would be surprised to have ever heard from even one person who had experienced it. For another none of them ended up getting raped, they just all felt a bit woozier than the amount of alcohol they consumed would seem to indicate. Of course they're never 100% sure exactly how much alcohol they really had on those nights either. All of them think that it's impossible that what might have been their 4th or might have been their 17th vodka shot might have tipped them over the edge all by itself, or maybe it was the prescription opiates they forgot about that someone was passing around to improve the levity of the night. Nope, they were definitely roofied by one of what is always a decently long list of people who they think have it in for them. I think it's a kind of narcissism really that causes them to think anyone cares enough one way or another to drug them out of spite.
Of course the situation is different when we have a lot of women who specifically remember some suspicious and ill-define "medicine" that they strangely enough took without question and with no apparent need for any kind of medicine. I think that despite their stories, most of them thought they were taking something that would get them high, and good old Bill said nothing to dispose them of that idea. Perhaps that was exactly what it did too, in addition to eventually rendering them insensate so he could get busy.