What is a jeffrey? Weed mostly, but its got a bit of opium in it, heroin, crunched up E's, clorox, methadone, subutex, morphine, peyote, angel dust, and some other un-identifiable substances. This drug Neapolitan was named after some nice bloke from down the road. Don't try this at home!
This is a comical clip from the movie Get Him To The Greek (2010)