In its smokeable form , meth is known as `` ice , '' `` crystal , '' `` crank , '' or `` glass '' . Some common nicknames in the USA include `` Snap , Crackle , Pop '' `` meth , '' `` ice , '' `` crystal , '' `` crystal meth , '' `` go , '' `` go fast , '' `` Okie coke , '' and `` tweak . ''