The second I saw this photo I knew it would make for an excellent Guess What post. No hints this time. You’re on your own, so good luck.
Once you’ve made your guess, read on to see if you’re right.
Even when I first saw the whole image it took me a moment to realize that it was a frenulum pulled through a PA.
Here’s a look from the other side which should give you a better idea of how this works.
I’m going to be shocked if anyone managed to get this right without checking the galleries first.