Originally Posted by
ifette
Currently on board DL721 JFK-SFO. Freaked out when the lady next to me in 3B tapped me on the shoulder and asked if I knew how to turn up the volume on the IFE - she couldn't hear anything. I looked down and she had plugged the headphones (the DL-provided ones with two jacks) into the power outlet

Wow....amazing how some people stay alive with that kind of ignorance or stupidity, whatever you want to call it.