A massive shit that breaches the waters surface.
You might want to wait a while. I just had a grand berango.
A blue nest is always necessary when entering a new porta potty. It is a group of neatly stacked layer of toilet paper on the blue surface. This nest is a place to aim your shit. Without one you might get splash back and a blue ass.
It was a new porta potty. I had to build a blue nest for safety.