an extremely fat woman with cottage cheese hindquarters. Usually spotted wearing too-tight leggings and a 5XL tweety bird t-shirt.
I was walking at the store the other night and i nearly got caught in between a volumptuous woman's asscheeks because she was bent over and i wasn't watching where i was going.
adj. - curvaceous and appealing, with an impliedanalogy with something delicious that one would want to eat - a portmanteau of 'voluptuous' and 'sumptuous'