The next few blog posts will discuss the defense of voluntary intoxication, concluding with a discussion of the recent DUI decision in People v. Carlson (October 12, 2011, G043833)__Cal.App.4th__. First of all, what is voluntary intoxication? This is the subject of today’s blog post. Penal Code section 22, subdivision (c), “voluntary intoxication as excuse for crime,” states that voluntary intoxication includes the “voluntary ingestion, injection, or taking by any other means of any intoxicating liquor, drug, or other substance.”