Personally my favorite has to be the "lp0 on fire" error message that stuck around until fairly recently. The origin of that message is from around the time of

Personally my favorite has to be the "lp0 on fire" error message that stuck around until fairly recently. The origin of that message is from around the time of the early laser printers. Laser printers have a small oven built in to melt the toner onto the page called a fuser. On modern printers that only gets turned on right before use. On the early models the warm up and cool down times were much longer so the fuser would both turn on earlier and take much longer to get back to a room temperature. Those things combined ment that a paper jam could very easily turn into a fire. In fact if the jam detection was having an off-day it could turn into a conveniently paper-stoked fire. Of course there's no real way to detect if a paper jam is the fire causing kind or not remotely so any paper jam would tell you the printer is on fire, just in case it actually is. In short: Early laser printers came with a fire extinguisher included in the sale price for a good reason.