|You Are Guinness|
You know beer well, and you'll only drink the best beers in the world.
Watered down beers disgust you, as do the people who drink them.
When you drink, you tend to become a bit of a know it all - especially about subjects you don't know well.
But your friends tolerate your drunken ways, because you introduce them to the best beers around.
Hat tip to the Anarchangel, though I should point out I actually enjoy Murphy's over Guiness. But realy, in the larger view of things, isn't that like counting the number of cherubs dancing on a pin head?