To toast, cheers, or touch glasses of any type of
alcohol together with your drinking partner(s) in the spirit of goodwill, health, luck, or congratulations.
In many cultures, it's considered to be good luck to make eye contact when doing so (and bad luck not to).
Some
people also follow a tradition of tapping the bar with the glass after clicking glasses (and before drinking) to express fondness for the business/bar and the
people who work there.