

I had to deal with the opposite once.
Was managing a bar where doing shots with customers was common. We also kept a bunch of leroux blackberry brandy in stock that was common for this (a tradition dating back 30 years)
One of the bartenders refilled an empty bottle with robitussin, becauae he was sick, and was shooting that instead when he did shots.
A server then snagged thay bottle and a couple of shot glasses to pour some shots tableside for a group, and then accused the bartender of dosing him on lean. (Promethazine and roxycodone)





I want someone to figure out how to make the glasses make an ear piercing shriek of other sound uncomfortable enough to make the wearers rip them off their faces.