Stoppin' at the log where catfish bite,
Walkin' along the river road at night,
Barefoot girl dancin' in the moonlight.
Turns out somebody dumped a bunch of Fluorescein, a non-toxic chemical usually used to trace leaks from septic tanks and water systems, into the river and a nearby fountain.
LINK (Via:The National Post)
The Hulk pissing in the river has also been ruled out.