What is the origin of saying Cheers to someone who is about to drink alcohol?
The origin of it in the old times was to kick out evil spirits with the sound of the cups. And later it started to have a different explanation, that is when you want to drink you see it, taste it, feel it (touching the cup with the hands), Smell it what is left is hearing it so you have to cheer so that you hear the clicking sound of the cups.
