True story
I once knew a genius-level, self-taught electronics expert. He told the story of living in the dorms of a Midwestern megaversity, when "my HiFi rig is louder than yours" was all the rage (this is looong before iPod earBud hearing destructors came on the scene). He would politely knock on doors and ask that the volume be turned down ... which of course resulted in it being turned up even higher.
So he retired to his lab and built his ODKD (Omnni Directional Klingon Disruptor). *High* amplitude pulse tuned to the frequency of delicate, critical, expensive-to-replace components in the stereo systems of the day (analog, of course).
>knock< >knock<
"Yeah?"
"Could you please turn the volume down? I'm trying to study"
"Eat shit and die, dweeb" >SLAM< [music turned up to 12]
Back in the room ...
>snap!< ....hmmmmmmMMMMMMMMMM... 3..2..1.. >CLICK!<
And all stereos in a 100 meter radius go quiet.
Ah, silence is golden!