1 definition by GoodWithWords

A larger/chubby/obese/ fat person that acts or dresses like a slag. A mash up of fat and slag.
Girl 1: "Omg! Have you seen Katie today?"
Girl 2: "Why is she such a flag?!"

Guy 1: "Don't know what you saw in Becka mate she is such a flag!"
Guy 2: "I know, her legs were like tree trunks."
by GoodWithWords March 10, 2011
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