meth or 'mericium?

This seems to be the question of the day as regards this gentleman and his mug shot:

http://cup-of-chemistry.blogspot.com/2007/08/radioactive-boy-scout.html

I am leading toward meth (or for the purposes of argument, "non-radiation-related issues") personally. So much so that I'd need say a 4:1 payout to bet on radiation. Of course I'm assuming that there is no informed source about which one it is. Anyone?