"China White" = fentanyl, or at least it should, but with todays kids and their hip slang, "your boy" could be refering to anything from table salt to cocaine..
Fentanyl is definitly the cheaper of the two, shit, it might be the cheapest drug there is - a skilled chemist could make a pound of pure fentanyl for less then $1500 - after the required chemical cut, you would have the equivalent of a metric ton of heroin - that works out to $1.50 for a POUND of smack, which breaks down to less then a penny a gram - that gram can then be sold for over $200 .. of course you must also factor in such things as the cost of several years of college chemistry classes, the equiptment, and what price can be put on a 140 year sentence in a small cell? Still, compare that to heroin, where you have to pay your field workers to cultivate the countless acers of poppies, the guerillas that would defend your operation, and the government of whatever small, tropical country you targeted..
FENTANYL BABY!
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Where in the nursery rhyme does it say Humpty Dumpty was an egg?