Do you have a dirty mind?

No no... that's your requirement after the horror of your last comment >_> Not only does it do its intended job of preventing you from biting, but there's the added benefit of you not being able to talk. It's a win/win!

You do know my teeth is like strong ~ Like I can bite through a watermelon just fine ~

This feels like every one of my perverted class mates just stood in one room for an hour and all simultaneously asked me if I watch porn the moment I entered the room. Now I feel uncomfortable and I am internally screaming like always...