After looking around the internet, I came across something that's just so much better than what the doctor's office is stocked with. You know, the poor as hell scales that don't even describe what sort of pain you're going through. You can find the posting
here at Hyperbole and a Half. If you are or know a med student, they'll get a laugh out of this, then carry it around for its sheer utility.
I also took the liberty of formatting it to fit on a letter-sized paper.