Could you tell me what happens if you drink mouthwash?

Alcoholism. There are lots of definitions of alcoholism, but this is a common one. Drinking mouthwash to get intoxicated is a glaring sign that one is most likely an alcoholic. The alcoholic brain can very easily tell one that their use is 'not that bad' or that 'their use is not hurting anyone'. But, if you are drinking mouthwash please consider seeing your doctor about this habit. Or get to an aa meeting.