Yeah really depends on location, someone offered me some 'white' today which up hear in the North East will almost always mean coke. Rock is also crack here. The meth "epidemic" hasn't "hit" us yet, we like our coke and heroin too much up here. Still they're keeping the pseudoephedrine behind the counter.
Tweak is probably a more universal meth reference, can't believe I left that one out.
