From the California Vehicle code . . .
"21200.5. Notwithstanding Section 21200, it is unlawful for any
person to ride a bicycle upon a highway while under the influence of
an alcoholic beverage or any drug, or under the combined influence of
an alcoholic beverage and any drug. Any person arrested for a
violation of this section may request to have a chemical test made of
the person's blood, breath, or urine for the purpose of determining
the alcoholic or drug content of that person's blood pursuant to
Section 23612, and, if so requested, the arresting officer shall have
the test performed. A conviction of a violation of this section
shall be punished by a fine of not more than two hundred fifty
dollars ($250). Violations of this section are subject to Section
13202.5."
"Highway", by the way, includes streets.
Drunk cyclists are a danger to pedestrians and other cyclists, and can even be a danger to cars (though much less so). That said, you are probably more of a danger to yourself than anyone else.
Bike to the bar, walk back. Hell, if you aren't that drunk you'll probably sober up about half way through the walk.
andy