Awkward moments in my life...

Grumpy looking guy in coffee shop plugs in his headphones to his laptop and starts a youtube, not realizing the headphones are not, actually properly plugged in and we can all hear his
trailers of old shoot'em movies quite clearly.
Me (very nicely): Um excuse me
Man: (Evil, pissed of stare)
Me: Sorry, I think your headphones aren't plugged in
Man: (pointing and plug) Yes they are
Me: Well we can all hear your videos
Man: They're plugged in
Me: There is sound coming out of your speakers
Man: (Unutterably pissed off stare, he pushes the plug fully into the laptop and the sound disappears)