Crystal Meth users that take the drug by injection into a vein from a needle, mostly the act is called "slamming". When slamming it is usual for the user to stay up sometimes for days and avoid activities outside of dark rooms. The behavior being something like that of a vampire.
I ran into Charles today, He looks awful and like he hasn't slept for days. I think he might be a Slampire.
by PD25 March 23, 2016