|1.||Restless Groove Syndrome|
Restless Groove Syndrome, or RGS, is a disease suffered by 90% of americans and 75% of people world-wide.
Common symptoms include moving a body part in-beat with music that is currently being listened to, such as tapping of the foot or banging of the head.
There are no current cures for RGS.
Cool Kid One: Look at that metalhead! what's wrong with him, and why is he moving his head so rapidly!?!?
Cool Kid Two: It's apparent that he suffers from Restless Groove Syndrome.