I didnt put in all the factors such as size, metabolism , size of the drink but I guarantee you if you drank 4 locos youd be over .165 . A standard drink will put you at anywhere from .02 to .04. Again depending on outside factors.Either you're much smaller than I am or you're talking about larger than standard drinks. According to most of the charts and calculators (e.g. https://www.csbsju.edu/chp/health-promotion/alcohol-guide/understanding-blood-alcohol-content-(bac) or https://www.healthstatus.com/calculate/blood-alcohol-bac-calculator/), I could drink a six-pack in an hour and still be well under .165. I'd be way to drunk to drive, but still under .165. Dude was doing some serious drinking.