I was reading through a section of my dissertation that I haven't looked at in a while, and I found myself reading about vague joints. I didn't remember using that expression, so it was kind of interesting to notice it there.
It doesn't exactly sound like the kind of thing you'd see in a Ph.D. dissertation. Of course, neither do gunk or stuff. Metaphysicians come up with some great technical terms sometimes. Of course, metaphysical discussions of holes really are about holes.