A weakened trembly condition caused by operating a CB radio for excessive lengths of time.
Disgusted local trucker: That electronics-whiz kid down the block from me is so proud of his new two-way radio gear that he built all by himself from kits, and he loves to listen on his scanner and then join in on any and all conversations taking place anywhere on da "ol' 40"... I wonder that he doesn't have ceebeeral palsy by this time!