Have you seen it in person? I remember the first time I witnessed it first hand. Went to help a friend move some stuff on a Saturday morning - his apartment was upstairs of a small town bar, and he asked me to wait in the bar for him while he made sure the missus was 'presentable'. Anyway, it was a few minutes before opening, and a guy stumbles in, sits at the bar - shaking like a leaf, orders a beer, and the bartender says "You know the rules "Joe", no drinks before opening time". Right after opening time, the bartender pours a beer and sets it in front of "Joe", who proceeds to pick it up with two hands and drink it all down, shaking the whole time. I was amazed he manged to not spill it all. A minute later, the same thing with the second one. About 20 minutes later as I'm walking through the bar with my friend on the way out, "Joe" is holding a beer in one hand, steady as ever, and apparently normal. That was an eye opener for me.