Used to do that all the time at my last job - it was normal for clients & coworkers to have a few beers at the end of the day, before my commute home. Here's what I learned:

One Beer = feel sluggish, dehydrated, and grumpy
Two Beers = feel great, ride fast and feel no pain
Three Beers = start imagining I'm Franco Ballerini powering over cobblestones towards Roubaix
More Than Three = scary, should've taken the subway.