Chicago slang for crack and heroin. In the vast open air drug market of the wild wild west side of Chicago, each set has their block that they sell rocks (crack cocaine) and blows ($10 bags of heroin). All it takes is being white and driving through the hood and you'll get solicited for drugs, cuz let's face it, they know what you're there for.
Ayo we got them rocks & blows, park park! what you need how many?
by into the void December 22, 2010