I'm putting a stop to my free IT services at work. No more will I come hit F11 on your computer for you because you maximized a window and don't know what to. No more pressing the power button on your monitor when you call me panicking because your computer doesn't work. You can change your own toner. Next one who asks is gonna get a polite but firm suggestion to call the help desk.
Help them but then turn the screen upside down and then wonder aloud "How in the world did that happen?" and walk along on your merry. They stop asking after that. Usually.