What I do with almost every drug is expect not to feel anything. That way, if I do feel something, it's not because I expected to. Of course, if I know it's the real deal, then it doesn't work. But in your case, it should . At worst, you thought you were tripping on oregano, like so many other first-timers. Get over the embarrassment and hope for the real stuff next time. I doubt a 22-year-old would fake you out, though :P.