I'm a network administrator at a local school district, and I get some doozies.
Teacher: "My keyboard is broken."
Me: "What is it doing to make you think it's broken?"
Teacher: "When I go to type my password it doesn't type it right. No matter what I type, it's always a little star."
Me: "Yes, it is supposed to do that."
Teacher: "Well, how does it know if I get it right or wrong if it's always little stars!?"
Me: "It displays the asterisks so no one else can see your password."
Teacher: "That is stupid. I hate Bill Gates."