This discussion brought to memory an "emergency" service call I received about 18 years ago. I was just a young guy - maybe 21 or 22. Sorry, it doesn't allude to the inadequacies of an electrician, but the idiocy of a customer.
Anyway, it's 10:30PM and I'm in the shower. My wife frantically enters with the cordless phone. A recent customer of a pre-fabricated home I did the wiring on was on the line. She was so frantic I really couldn't get any sort of comprehensible information from her other than that there was an electrical problem. I immediately grabbed my tools and started out on the 2-hour drive.
Upon arriving I received an extended verbal whiplash, after which she calmed down enough to answer some basic questions...
First, she led me to her living room, where there was a "smell" coming from a baseboard heater. Turned out to be a crayon.
Her second concern, which she asked in a very demanding tone, hands on her hips, etc. was "Well, why is it that sometimes the hall light is illuminated when the switch is flipped up and other times it is extinguished?" I'm not kidding, I almost exploded. She had never heard of a three-way switch (actually, there were two 3-ways and a 4-way).
Still, she had a defiant attitude, so she went on to explain the problem with her door chime. Yep, you guessed it, it made a different chime depending on which door bell button was pressed! It never occured to her that maybe this was to prevent needless steps to a vacant door.
Everyone should get a minimum of one "give-someone-a-backhand-for-free" card each month. I think I would have used up at least six of them that night!