slum
Poor quality, poor performance, not necessarily referring to poverty. A sad, destitute state. Evidence of decline (in quality)
Example:
That was such a slum performance by the band today.
I haven't gone to school for three days, and haven't done a drop of homework, i'm really slumming man.
That was such a slum performance by the band today.
I haven't gone to school for three days, and haven't done a drop of homework, i'm really slumming man.