Another play on class distinctions between backgammon and craps, but the joke is obscure. While at first we might take the men for burglars, their attire is pointedly well-to-do, and those "masks" could be riding goggles? The joke may have something to do with Abercrombie & Fitch, which at that time was a sporting goods / outdoorsman's store catering to the very wealthy.
