system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why and how does alcohol make people do things they normally wouldn't do?

What exactly triggers us to do all of those dangerous, embarrassing and in general, stupid and random things while we are drunk?  
I know you lose your self-restraint but what's the process, why does the body think this is something good to do, is it defense mechanism?
gpt
Alcohol is a central nervous system depressant. This means that is slows or prevents signal transmision in the brain.

You would therefore be forgiven for thinking that it would just slow people down, but it doesn’t because of the way that our brains work.

You might have heard that alcohol lowers our inhibitions, think of it like “slowing” our inhibitions. A part of our brains called the basal ganglion filters our thoughts and actions. All thoughts and potential actions come in to the basal ganglion and the basal ganglion filters out the bad decisions or actions (if the basal ganglion wasn’t there we would do and think everything, we would have no control over our actions). If the basal ganglion has been slowed down then it stops stopping actions.

Every part of our brain gets slowed, not just the basal ganglion, that’s why along with the slowed inhibition we have slowed reaction time


TL;DR: Alcohol is a depressant, it slows our whole brain down, but because inhibition is an active process that also gets slowed down.

EDIT: This is an answer to the OP question. Alcohol also makes us bad at walking, talking, and generally most things. This is because alcohol slows our entire brain. It also slows the parts of our brains that remember, or feel stressed or scared, that’s why people use it to relax.