that lip piercing (just like any other piercing in mouth) may cause tooth damage and/or gum recession over time. It's a bad idea.
Nope, nope, nope. Incorrect. Vertical labrets, which this person in the picture has, do not go into your mouth at all. It goes vertically straight up through your lip. No part of it is ever inside your mouth.
The piercing that’s sitting 2mm from her front teeth in the photo will never collide with them? Yeah ok chief, I do have eyes here. I’m sure she never chews on that conveniently place fidgeter.