A mouth that is unusually pitch black, typically to give an uncanny effect; this might be used to reflect [[horror (theme)|]] elements. 

It may be found in characters that are emotionally unstable, such as those enacting a [[crazy smile]], and/or [[yandere]]s.

h4. Examples
* !post #7144035
* !post #7998527
* !post #8085930

* For characters that have a naturally black tongue and/or inner mouth, see [[black tongue]] instead.
black mouth