A phrase often randomly called out during silent sessions, such as within a class or a library.
Also used to respond to anyone who calls to you.
Heck, its just a bloody random phrase, use it anywhere, anytime.
Chad: "Did you see the new Why Hello John video?"
Terry: "The who video?
Chad: "Why Hello John, they did the SaxingPSA video"
Chad: "I went home in a rage and struck my wife because that video was so bad.