What you call the people who speak while their mouth closed?

This is a bit of a trick question! You can't actually speak with your mouth closed.

Here's why this is a fun riddle:

* It plays on our expectations: We expect to hear sound when someone speaks.

* It hints at a communication problem: The phrase "speaking with their mouth closed" makes us think of someone who's being secretive or not communicating clearly.

So, there's no real answer to your question, but it's a good way to start a conversation about different types of communication.