I've got one floater that tied itself into a knot several years ago. I was looking into a microscope, and I saw it cross my vision with this perfectly tied knot

I've got one floater that tied itself into a knot several years ago. I was looking into a microscope, and I saw it cross my vision with this perfectly tied knot that wasn't quite pulled tight. Now it's worked itself into a tangled mess, and when I see it it's more like a hairball.