Purple Drank is a slang term for a cough syrup cocktail made with prescription strength cough syrup containing codeine and promethazine, Sprite or Mountain Dew, and a Jolly Rancher candy served in a Styrofoam cup with ice. Purple Drank does not contain any liquor, but it will really mess you up; it has been dubbed the anti-energy drink. Other names for Purple Drank include Sizzurp, Barre, Lean, Purple Jelly or simply, Drank.
Purple Drank is largely popular in the southern United States in the rap scene. Purple Drank's roots can be traced to DJ Screw in Houston, Tx and is credited with the inspiration for the "chopped and screwed" style of hip-hop. Houston underground rap hero Big Hawk said folk have been drinkin' Drank since the 1960s and 70s.
According to wikipedia, June of 2000 brought drank to a national audience with Three 6 Mafia's singles "Sippin' on Some Syrup," featuring UGK and "Rainbow Colors," featuring Lil' Flip, which is about the addition of Jolly Ranchers to Drank, which apparently creates a crazy mix of "rainbow colors."
In July of 2010, former Oakland Raiders quarterback JaMarcus Russell was arrested at his home in Mobile, Alabama for possession of codeine cough syrup with out a prescription.
Most of the folks who made Drank popular, including UGK, DJ Screw, Pimp C and Big Moe all died from drinking Sizzurp. We at ChaCha do not recommend you use cough syrup in any way other than that suggested on the cough syrup packaging or by your doctor.