What do you call a bear, with severe dental issues? A ...

Persians do it every day. Even rakes need a place to stay.

I have many keys, but open no door, hidden hammers strike at my core. Black and white in ordered row, beneath your fingers, I sing and flow.

This pencil case just wont move, neither will this pen and notepad. No, its still still

One of me will keep you thinner A million of me to make your dinner Rub me the wrong way, you might get a splinter.