uh, for the boozy koan-gnome: don't you still suffer the normal effects of drinking alcohol?
Drunkenness: Just like drugs, alcohol can be abused and have significant negative effects. In general, a character can consume a number of alcoholic beverages equal to 1 plus double his Constitution modifier. Drinks consumed in excess of this total cause the character to become sickened for 1 hour per drink above this maximum. Particularly exotic or strong forms of alcohol might be treated as normal drugs. Those who regularly abuse alcohol might eventually develop a moderate addiction.
Huh. Looks like you only ever get sickened. I guess you can koan all you like while feeling slightly queasy. I always thought this was the normal limiting power of drunken masters, that you couldn't keep on drinking.
Don't you also need to use a potion sponge to drink underwater?