Slang for drug peddler, in other words: A dude or dudette who dabbles in the rough and dangerous world of selling illegal (sometimes legal) substances.
PDX Hipster #1: What do you want to do tonight?
PDX Hipster #2: Pick up a couple Drexlers and listen to mediocreindie rock?
PDX Hipster #1: Sounds fly.
PDX Hipster #2: Fly? Really? 1987 called, it wants its slang back.