The bike-messenger style bag the goes over one shoulder and holds either a laptop or the collected works of Belle & Sebastian. Has been the preferred luggage of the common urban douchebag, and can be often seen paired with rectangular thick-rimmed nerd glasses. Wearing a fag bag is tantamount to wearing pink triangle i.e. a confession that one is a certified pussy.
Hey, find me a rock! Here comes an asswipe on a fixie with a fag bag!