I remember hearing one half of an IT support call. I was visiting a friend who happened to be the technical editor of a computer magazine. His father, a doctor who had very little computer experience - this was circa 1990 - called his son, because he'd encountered a problem. This is roughly what I head.
"Hi Dad, what's up? Say again? The mouse pointer doesn't go all the way up the screen? Okay, lift up your mouse. Move it towards you. Right, now put it back on the mouse mat. Try moving the pointer now. All good? No problem. See ya."