i'm 5'9", a buck 45, and i'd say that if i don't have 9 drinks in me, i'm not feelin a buzz. takes about 18 to get me drunk and about 34 for me to black out/puke. and i'm not kidding at all... no, sarcasm button definitely isn't being pressed right now...
also, i have to be smoking mad amounts of crack while i'm drinking to feel anything.