What is the dumbest question a customer has ever asked you?

I've got one (though not a customer interaction). Brother-in-Law calls me up a few days ago saying he needs to print some webpage showing he passed a certification and bring it to his next class or something. Tells me the printers not working. Can't articulate anything else, only that its not doing anything.
Me: OK....print it to a PDF then.
Him: Nothing comes up when i choose that.
Me: Ok...do you have a default download directory or someplace you normally save files?
Him: I don't know whats that?
Me: OK...hit the 'printscreen' key and just paste the image into mspaint and save the image.
Him: "I hit printscreen and nothing happened".
Me: Yeah you have to now open Paint or another image editor and paste the contents of the clipboard which you just copied.
Him: Where's that? Me: Open the Start Menu or the run command.
Him: I don't have that.
Me: OK...then you are out of luck man sorry. Him: I thought you knew about computers?
Me: Yeah sorry I must be dumb...
//Also the guys TV remote wasn't working for WEEKS before I came over and fixed it by changing the batteries. Good 'ol family.

/r/AskReddit Thread Parent