The word barista is an Italian word, and in Italy, a barista is a male or female "bartender", who typically works behind a counter, serving both hot drinks (such as espresso), and cold alcoholic and non-alcoholic beverages.
"Just mentioning it in case anyone might want to know" -it is usually said after someone says something that did not go down well with the listener/s In all likelihood, Barney the dinosaur is a massive paedo. Just putting that out there.