That's extremely annoying. I have a Bluetooth speaker that I was intending to repurpose into a device to combat inconsiderate smart phone usage. I connected it to my laptop and started playing multiple streams of Punjabi MC - Beware of the Boys. It was torturous.

My other idea was to get the line from dumb and dumber "Do you want to hear the most annoying sound in the world..." And just loop the sound continuously.

I might just try this project though and see how it goes.