One barista had to work a shift alone , and the pressure was high. Working solo means you have to do a bunch of different tasks all at once, while a crowd of customers glares at you for not making their food and drinks quickly enough. It's the type of situation that food service workers hope to never be in, but it happens all too often thanks to call-outs. This barista told their story of what happened when they encountered a customer who they thought was being impolite . Plus, this was the typ…