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Hmmm that is weird. I've never seen a fungus like that. It's pretty active if it's bubbling like that. Fascinating. Let's see if anyone else out there knows.

The poop thing was just humor :) IS there any possibility that it could be eggs of some kind, insect or amphibian, in a froth?

Resteemed this. Perhaps someone will know

Yes, I got your humor ;)

That's a good point that it's an active substance! It probably grew overnight.

I don't think it's an eggy material, as the smell was fungal. But it's hard to say. That was the only instance I saw of it.