How do psychopaths act when they are drunk?
Hmm, I suppose I am barely qualified to answer this question... I test extremely high on the LSRP and those tests dealing with antisocial personality disorder. However, psychopathy isn't actually a medical term with specific definitions. Therefore, I don't know if I qualify.
However, personally I don't change my behavior at all. Most of my friends/co-workers tell me they can't tell that I've been drinking. I personally believe this is because my behavior is based upon years of modeling and mimicking the behavior of those around me or in similar situations as me. Alcohol tends to cause a loss of inhibition allowing people to behave how they feel on the inside. For example, get a person drunk and they may hit on women aggressively (because they think they have a right to women) or be overtly racist (because they think racist thoughts all the time and lose their filter via alcohol). However, there isn't another level to me. I don't feel the baser emotional drives or a need to hide my thoughts to fit social norms...because I don't care. I don't feel shame or empathy 98% of the time anyway. The way I act is based on the way I choose to act and therefore doesn't change with inhibition loss via alcohol.