Mesty describes a person who is messy and nasty. Additionally it can describe someone who doesn't smell good and is musty. Individuals who go out in public without looking presentable or make a fool out of themselves in public places are mesty. it can describe a persons attire, the way they smell and their actions.
"That woman in the grocery store was so mesty with her fishnet stockings and smeared make up."
"All my husband does is look at mesty women on MySpace all day. How disgusting."