From the ArcaMax Publishing, Jokes Newsletter:
http://www.arcamax.com/news/jokes/s-382129-211684
Customer: "One of my friends gave me an ImageWriter printer and this
keyboard. He said he gave me all the cables, but I can't figure out
how to connect them. Am I missing something?"
Tech Support: "Well, a computer would help."
Customer: "You mean this keyboard isn't a word processor?"
Tech Support: "No ma'am, its just an input device."
Customer: "Then I need to buy a computer, right?"
Tech Support: "Yes."
Customer: "Do you think I'll need a monitor, too?"