True story: had a super aggressive polygraph examiner last year who kept insisting that I wasn't clear on my "involvement with illegal activities." He noted my current work address and asked "you never been to a happy hour after work? Maybe you threw back a couple of martinis on an empty stomach and headed home?"
Me: "Sure. I mean, never martinis, but yeah."
Him: "so you're telling me you've driven drunk?"
Me: "No. I've just driven after drinking. Totally different."
Him: "You do know that tolerance is different from blood alcohol level, right? You could have felt 'fine' but still been over the legal limit."
Me: Um, so driving non-impaired by alcohol is the crime you're looking for?
Him: So you admit you did it?
Me: I'm in no position to retroactively interpret the legality of past actions you just deemed harmless to public safety.