How does drinkin liqor make u drunk?

It dispalces the water in your blood stream which carries oxygen to your brain(H 2o) and it is the brain cells dying that gives you the feeling of being drunk.In a lot of cases where a person drank something like vodka too much too fast it killed them.In some cases left them in a vegatative state.Its not hard to understand why alcohol has ruined the lives of so many people.