You might say that I'm beating a dead horse but here is an interesting article from the horse's mouth, none other than Massad Ayoob.
http://www.backwoodshome.com/articles2/ayoob143.htmlExtract:
"At time of death, Martin, a regular pot smoker and apparently a drug dealer as well, was enamored of a narcotic concoction called "lean" or "purple drank," made by mixing cough syrup with candy like Skittles and fruit cocktails like the Arizona Watermelon drink that the media turned into "iced tea" because they couldn't bear to connect watermelons and black people. Martin had a history of street-fighting and of being dissatisfied that one victim didn't bleed enough, and had been negotiating to illegally buy a handgun...."
A lot of the same info as heard prior, but I consider Ayoob a trusted source.