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1.
noun, adjective; an obscenely fat girl or woman commonly seen doing mundane tasks. If not for her exaggerated size, she would otherwise go unnoticed. She could be considered a threat if approached for fear of trampling or accidental consumption of everything in her path.
Example 1. "Look out, Fat Vicky at 12 o'clock!!"

Example 2. Waiting in line at a drinking fountain behind a very large girl taking a long time to drink: "Damn, save some for the fish, Fat Vicky!"
by Ross March 03, 2005