Moron in the back of the class wasting you're precious clock-watching time: "Blah, blah -- "
You as you turn around and flatly say, "HELLO! Are you talking?"
(2) a polite way of answering a phone
Bill: "Well, hello, Bob."
(2)(Phone rings loudly)
James Watson from AT&T: "Hi, this is James Watson from AT&T. I'm calling to talk to you about your long distance plan."