I was out once in Ufa and had had a few too many already. We came upon a merry group and they invited me to have a shot. I said no because I really thought I might get sick. I could see a cloud descend on the group and my companion urged me to have just one shot, which I did and everyone got happy again talking about int'l friendship blah blah blah. Lesson learned: don't refuse a drink, it makes for a much nicer atmosphere.