A person who works in a coffeeshop. More than likely, a person who puts up with large variables of bull shit from snobby customers throughout his/her work shift.
"Hey, what do you do?"
"I'm a Barista "
"Oh, I'm sorry..."
"Yeah man...It's okay."
Coolest motha effin' last name ever, bitch!
My last name is Milligan "Jeeeaalous?"