I'll second that. I had a 6 pack over the course of the past 2-3 hours and was treated to a roadside alkalyzer test (tail light was their excuse... & that particular town loved to pull over my Wrangler).. I had to have been close to .08 cause they tested 3x. They didn't tell me exactly what I blew and I didn't ask. That was about a decade ago.. but I'm right at 155 lb and fast metabolism so take it for what it's worth..
Ok, so one last post on this. As I look back on what I posted I could have been clearer. But first, I am not advocating drinking and driving, I am trying to point out how much alcohol those numbers really are to the people saying you can drink two or three beers and blow .08. If you were 100 lbs, maybe.
At 155lbs you would be at a disadvantage purely for numbers. Less body mass to spread the alcohol across so x number of beers gives you a higher BrAC than someone that is 300 lbs.
As far as the three tests, I don't know without being there but two are required to make sure they didn't get mouth alcohol. Very good chance one of the tests was higher due to this. Also it sounds as if you did not get arrested so it must not have been too bad.
As far as the fast metabolism, that may help some but not enough to make much difference. It's not really fair but full blown alcoholics actually metabolize alcohol the fastest.
@Ron I actually like your chart you posted. Purely from a math point of view it's not entirely accurate but it is a fairly conservative and safe chart if people we're going to use it. It also seems to be for all weight ranges.
I have been in the controlled drinking exercises and know what .05 and .08 feels like. I also know that before I knew what my alcohol content was there is no way I would have driven at either level.
One last misconception. Even in NC you can be convicted of DWI below a .08, it is just much harder to prove so many LEO's don't try.
@77GreenMachine has the best idea. Just don't drink and drive at all, it's not worth it. Get a designated driver or Uber/taxi or just stay where you are.