Wild throw here,
snot, though this ain't exotic
At first I sneak around but I, don't ask why.
most of the time you don't notice your snot because it's doing its job up there undisturbed.
The next three times I hover or drag.
Don't know why three would be specially important, but snot can hang out of your nose and if you wipe it like a 5-year-old you drag it across your face instead of getting rid of it.
In, the very end, I'm still not out.
sometimes that snot just won't come out.
Overall, I'm a brother to gristle and hair.
another type of bodily item
I'm hard to get a hold of, but easy to find
Look in an abandoned corner and find me there
used tissue left on the floor?
I definitely follow suit that it is some sort of gross thing created and left behind by the human body. The only things I can think of left in the carpet are all nasty things :(