if its a party at a friends house, usually beer since that is all that's there. If there's whiskey I'll drink that and if there's rum I'll steal it and horde it and become rum fueled and awesome.
If we're bar hopping my friend and I do a shot of whiskey and a beer a half dozen times or so before switching to just plain beer. Usually I start off the night with a couple rum and cokes.
I'm pretty good at gauging my tolerance. I've never gotten to black-out drunk but I've been on the verge of throwing up a couple times.
I'm with Donna, five shots of whiskey isn't that bad.