OK, you'll think i'm nuts but i've got witnesses. Sitting at my desk with metal frame glasses on i could swear i heard conversation. When i moved my head it would be clearer of fainter. Turns out i was picking up from neighboring engineer's bluetooth wireless headset to his cellphone. Someone else got the same thing when putting my glasses on. Now we can't get it to replicate. Very wierd. Must have been just the right dirty metal-to-metal interface in the hinge area or where the frames screw together around the lenses.
Should i apply for a patent?