If you have been charged with public intoxication by law enforcement and you do not agree to a plea, but wish to go to trial and represent yourself, you have that Constitutional right in California.The problem with representing yourself in such a situation is that most likely a blood/alcohol or urinanalysis was taken of your blood alcohol content at the time of your arrest. If so, the prosecution will use such evidence as part of its case in chief to discredit you in your defense as your own lawyer.Alcohol intake impairs one's ability to recall events. Furthermore, by representing yourself at a trial,you may want to take the stand and give your version of what happened. If so, you waive your Constituional right against self incrimination.