Thanks ArrowX you have led me in the right direction.
apparently this is sort of true.
Meth users get things called "speed bumps" (I read on one site that the meth comes out through the pores and ends up clogging the pores and causing something like a blister). But I am having trouble finding out if they actually contain meth in them.
In my search I found this site:
http://www.kci.org/meth_info/slang_names.htm
which is awesome. My favorites were "Albino Poo", "Horse Mumpy", "Shiznitty", and "White Bitch".