In article , SR
wrote:

Hello: I have an old pair of headphones made by Koss. They could be
about 30 years old. They were given to me by my Dad. Sometimes, I get a
very painful lould knock sound. Not sure what causes that. Other then
that, they work great. But funny looking. LOL!

73, SR!

Snip

That knock is God flicking a finger against the side of your head for
answering a Troll on Usenet.

--
Telamon
Ventura, California