With alcohol stages are something like this:
1) First it makes you relaxed. With the help of the music and the company you start feeling integrated. Thats usually within the first hour of social drinking.
2) Later you usually feel liberated, at this stage your personality and emotional state becomes exposed. You can become more friendly, more talkative or if you are not well you can start opening up about it and even cry a bit. You feel a bit tipsy but this is not the dominant feeling. It depends, but the gist is that you lower your guard. This is the stage where most benefits of drinking is. Usually can be maintained for a few hours by keep drinking slowly.
3) Next the effect of alcohol start becoming a bit more pronounced, you feel funny and you might start having motor skill issues. This is the stage you better stop. There's nothing good beyond this. Ideally this is at the end of the night and you are headed home.
4) Then you actually become drunk, you start slurring when talking. Your motor skills are severely impacted and emotional issues may arise and you can do things you will regret later. This usually happens very late at the hight of drinking.
5) The last stage is when you are blackout level drunk and don't remember much tomorrow. At this stage you need to have someone to look after you. You can be a danger to yourself and people around you. It happens when you push it.
How does the weed smoking look like? Where the social smoking fits in this?