ass-dollar (n.) 1. Any piece of currency received in change so worn out and raggedy that the recipient rightfully concludes was almost certainly stored up some prior owner's tailpipe at some point in time. e.g. "I got two ass-dollars in change at the drive-thru."
Having received far too many exemplars of the type, we herewith officially coin the term. Use it widely with our sincerest benedictions. They have apparently overrun the circulating bills to the point that the Treasury Department no longer finds it convenient to remove them from circulation.
Just one more indicator of the true state of civilization, and its continued slippage towards mud-hut Turd World status.
Don't even bring up the actual value of same over time.