Content that fits the general definition of threading, but in a way that makes it hard to describe with more specific tags.

Note that there are a few "unusual" situations that are still common enough to have their own tag, such as ear threading/in one ear and out the other, urethral threading/urethral all the way through, mismatched threading, jukaroism, detached threading and so on. If your post qualifies for one of these, you may want to just tag it as such and leave out unusual threading, unless there's something with that specific post that distinctly sets it appart from the other ones.

For example:

Weird anatomy

post #4171292 post #1680719 post #2695662

Regular anatomy, but very unusual entry/exit pair

post #2688130 post #174016 post #1672584

Lack of proper orifices

post #3070111 post #933069 post #3647328

Nothing behind the orifices

post #1593708 post #4408852

Goo bodies or similar breaking the expected rules (but with a proper entry or exit orifice)

post #1435597 post #1273656 post #2037642

Whatever this is

post #1733592 post #1991226