Raedwulf had it right....everyone is different. There is NO way to set a standard or define a comfort level for anyone else.

For one thing, body size is relevant--a 200lb guy can usually handle more than an 85lb woman...but add to this metabolism, and you get still different answers. I am fairly lucky in that I process alcohol pretty rapidly, and if I limit myself to one or two (which I 'almost' always do) there is little effect. (I was once stopped by police on New Years eve...after having 3+ only 2 hours earlier, and they got a 0.0% reading on the breathylizer)

The other lucky thing is that I am not compulsive. My brother CANNOT have one drink--he will not stop until he is p***ed. I can have one or two & be happy.

I have seen performers drink all evening with no noticable effect, and others who were obviously impaired......know yourself and YOUR limits!