Basically a douche bag but just being extra duffely. It means nothing so if you were wondering, why you see this on facebook, don't worry it just means douchebag but it sounds a little cooler. Also, if you're too much of a coward to call someone a douche (bag) to their face, you can just mutter under your breath a shortened version, "duffel bag.."

Got the covid-19 vaccine