People are different.
I'm not the guy from before, but I don't even think of sticking my dick in there. It's fascinating to me in a slightly sexual way, yes, but I don't see it the way you see it and that shouldn't come as a surprise, because people's psychosexual fuck-ups aren't all the same.
For me, it's more about a power that's a part of a girl and can't be taken away or hidden. The hiding it can be cute, but the main thing that gets me interested is the idea of a girl embracing that she has powerful parts and using that knowledge to grow up and be at ease instead of shrieking and throwing up her hands and crying and running away from responsibility.
That's why sharp-toothed smiles do it for me.
For me, they don't say "leave your pönör in my hands, I promise you can trust me", but "I'm comfortable enough with my own power to show it to you without being embarrassed, but also I don't have to be a cock-chomping harpy".
That's also why I like futa bulges, moderate muscle, suntans and mundane levels of body hair/odor.
It's probably because I dislike shrieking, panicking, frilly girls who deny they can do anything and play at being soft and floppy just to avoid being made to take responsibility or exert themselves.
I know from experience that any girl can be a lot better, a lot stronger and by virtue of that a lot cuter if they decide to embrace that responsibility and the less polished parts of themselves, and the idea that there are still girls in the world who aren't riding their gender to money and special treatment but still don't have to go too far in the other way and become bald-shaven cock-biting fÿmÿnÿsts is comforting to me.
All I want to say is, "just because I like strength in women doesn't mean I'm a masochist, I just want someone who can shoulder the ugly parts of life along with me as a happy and competent person and sharp teeth or other predatory/ugly parts are a visual shorthand for it".