Interviews
Many years ago was interviewing for an IT Support job. Part of the interview was "here's a PC, we've broken various things in it, make it work". Was things like one of the cards was loose. But I always first checked the voltage switch. It's just common sense. And after I got the job, I joked with my manager that I'd love to set it up for an interviewee with the voltage set to 110 and see if they spot it. Although I sometimes set that part of the interview, I never did that.
3 years later, I've moved on and I get an E-Mail from my former boss saying "Ha Ha Ha" and nothing else. He wouldn't reply to me. So I contacted one of my former colleagues. Seems whoever set the machine for my replacement's interview HAD changed the voltage switch - my boss assumed it was me! Unfortunately they didn't check and blew up the power supply when they tried it...
Oh well!