“ You knew what i was when you picked me up.”

What this basically means is that when you drink beer you get drunk. You wake up and your in jail. You have been arrested and thrown in jail for Resistance arrest and the influence of drunk driving. You cant be put on bail because you had severely injured a person. So the beer bottle means that you knew what i was when you picked me up. Meaning you knew what it will do to you when you picked it up. Its almost like the