An adjective used to describe the worst and most repulsive parts of life. One who is slabby is tired, hungry, or upset in some form. A place that is slabby is dirty, grimy, and polluted. A slabby object is unusual and sometimes disgusting.
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.