Some are repeats I diddent bother to look over everyones post.
Herion- Skag,
Methanphetamines- Cheese, Dope, Speed, Glass, Tweak, white, shit
Marijuana- Herbs, buds, chrons, weed, pot, skank, reefer, dodo
Cocaine- Coke, yayo, ya, dust, blow
also you can input other less common but active drugs,
Dextromethorphan Hydrobromide ( cough suppresent ) - DXM, skittles,
Vicodin- V, dope
PCP- Angel dust,
hehe if you can find names for DOM, DMT and other obsucre things then all the bettter. Also look at this web site http://www.erowid.org/psychoactives/psychoactives.shtml