I was amazed--and appalled--when I first studied alcoholism professionally to discovered I'd driven"drunk", i.e.: 2 glasses of wine with dinner for my weight and size, many times, not to mention that women, even accounting for wieght and size, are more affected than men. California's DMV helpfully supplies a chart with every renewal or other missive they ever send you, apparently in hopes of spreading the word. I think most people have no clue how little it takes to be legally drunk, so that really is helpful.