Quarter Hoarder Disorder
An obsession for state quarters that renders a sufferer incapable of spending a them. They must save every state quarter they come into contact with. Also known as QHD.
I just picked up 3 MN Quarters at Subways, maybe they will sell me some more. "Boy I could use a soda, but all I have is state quarters, water it is, damn that Quarter Hoarder Disorder."