I think I'm going through the "young and stupid" stage a few years late...I'm nearly 21 and just recently discovering that shots of vodka just lead to more shots of vodka, each one more delicious than the last. I always start drinking with the intention of having just a few, and then end up having way more than I planned.
Unfortunately, I'm a goody-goody who drinks with like-minded folks, so I've never really tested my tolerance. That'd make a drinking competition hard.
Speaking of, this has been a bitch of a week, it's four am, and I'm still working, so I can't WAIT to have a drink!