system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does getting drunk work?

I know that alcohol + human = drunk human, but how does the alcohol get from our stomachs to our veins, and how does that make us drunk?
gpt
In the mouth, down the esophagus, into the stomach, into the small intestine, diffuses through the intestinal wall into the bloodstream, through the bloodstream to the brain, diffuses across the blood brain barrier, latches onto neurons as a positive allosteric modulator (meaning it doesn't bind to the receptor site of a neurotransmitter, but increases the potency of it) of GABA.  

GABA is the chief inhibitory neurotransmitter of the brain. Inhibitory means it's GABA's function to actually slow down the firing of neurons. Alcohol makes it more potent, and so it ends up slowing our brain down more than normal.