sloppy, less-than mediocre, leaning toward mental retardation. foul stench.
Is s/he slabby? Sure smells like it!
To be chubby, Lazy, and just a wierd person in general, or slibbin'- the act of being slabby.
Josh was being slabby as he ate thai food and played madden all day. If your name is Josh or you know a person named josh your chances of being slabby increase.