Thing(s) which piss me off greatly
(Part I of a multipart series)
Printers which cannot distinguish between one and three sheets of paper going through the spooling thing at once (I am not an expert on printer jargon), thereby printing 5% of the page on one page, 5% on the second, and 90% on the third. Which also screws up the double-sided print job you were trying to do in order to save paper.