A marby can be found in many forms; cruising, dozing, munching and puffing. In some cases these are happening simultaneously. Marby's are also very knowledgeable about random topics, dressed fashionably, and are always aware of the time of day. A marby's drink of choice usually involves Soco.
Man did you just see that marby? He was talking to 5 babes, took 9 shots and the went to doze in the corner.