worked in a college lab a student decided to print an overhead using the laser printer (there was a big note saying don't use your own paper and where to get help) and proceed to run a sheet of overhead vinyl through the laser printer it of course melted and jammed into every nook and cranny in the printer i would have been annoyed except he then went to the next printer and did the same thing it took a co-worker and i 2 hours to disassemble most of the two printer pull out the blobs of melted plastic and try to make sure all the bits were out a testimony to HP laser printers, both worked for years after that

had a client call me her laptop was not connecting to the wifi network in her house i asked if her wireless in the laptop was on she couldn't tell so i drove sixty miles and flipped the clearly labeled "wireless" switch. total work time 7sec counting walking from the door and greeting the client and explaining where and what the switch was