2. Originaly used to desribe the ghetto neighborhoods of New York city and Los Angeles.
(also see "hoodlums.")
I haven't gone to school for three days, and haven't done a drop of homework, i'm really slumming man.
In a general sense, it can be used to describe anything in a negative way
2) "My test grade was so slum! I got an F"
3) "The paint job on that car is so slum!"