A contraction on scum and sludge. The dried food or drink that accumulates in the bottom of a bowl or cup. This is usually noticed when someone is doing dishes. In order to clean one must scrub vigorously in order to remove.
Chris: "John did you forget to rinse out your cup?"
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!