When out in a drinking establishment, you can tell a lot about a man by how he drinks.
If he’s downs a cheap shot quickly (or pre-maturely) and then slams the glass on the bar and turns to ‘high-five’ one of his buddies, that should give you an idea of how he does everything. EVERYTHING.
Look to the quiet man lingering over each taste of his well-mixed cocktail. Notice how he picks up the glass with quiet confidence, puts it to his lips and savors each taste. He then sets the glass back down. He does it firmly so that the liquid isn’t spilled but with a gentleness that doesn’t upset his glass.