Refering to an individual whom sells and distributes products, most commonly drugs, with the transaction taking place through the use of a brown paper bag. Money is exchanged with the product within the bag and given back to the individual making the sale.
Playa's Circle ft. Lil Wayne in the song "Duffle Bag Boy" Wayne says the line, "If I dont do nuthin Imma ball, Im countin all day like the clock on the wall; So, goin get cha money lil Duffle Bag Boy, so, goin get cha money lil Duffle Bag Boy!"
Wayne is telling the dealers to go ahead a make that money.
A street hustler that sells large amounts of illegal products through the use of a duffle bag. Duffle bags are more commonly used to sell drugs and or weapons; the bag is usually dropped off or exchanged for other drugs, weapons or cash.
Ya boy is movin weight by the duffle bag, now that is a true duffle bag boy, na mean.