This painting by Cy Twombly, which is a copy of a child's doodlings, sold for 2.3 million dollars.
A Picasso painting that sold for 95.2 million of dollars -
http://shim4him.wordpress.com/2011/01/30/95-2-million-worth-of-ugly/
A Rothko painting that sold for 87 million dollars
http://www.israelshamir.net/shamirReaders/english/Darkmoon--The-Plot-Against-Art.php
If you can, show these examples of degenerate art to your co-workers and ask them what is easier to believe, that a copy of doodlings done by a bored schoolchild sold for 2.8 million dollars and that a very ugly and degenerate art "portrait of a woman" sold for 95.2 million dollars and that an artistic fraud of a smearing on a canvass of 25 dollars worth of paint sold for 87 million dollars, or that you paid a few thousands of dollars for quality headphones and for an amplifier and cables ? Ask them what is easier to believe.
If, for your co-workers, the ability to have an erection depended upon their willingness to learn and upon the ability of their brains to retain and recall the standard high school lessons of physics then they would have understood very quickly how the electrostatic headphones work.