There’s a creek in north Raleigh that has a "sticky white substance" floating in it.  You can read about it here (with pictures!).

I thought about working in a reference to NC House Speaker James Black, currently embroiled in a few scandals here in the Tar Heel State, and saying something snide about "sticky Black substances" being common in Raleigh, but that seemed a little too sophomoric for me.  Or not.