This makes me wonder if anyone else kind of bites on their fingers near the edge of their nail - not the tip of it, but the side perpendicular to it.

I say "kind of bites" because sometimes it's like a nip, sometimes I just press it against my teeth. Something about the sensation really hits the spot for me and I have no idea how long it's been a habit. It feels as satisfying as scratching an itch.

This might be more of my autistic sensory experience leaking into the ADHD forum, though.