I am not a big fan of mouth sounds myself, but I know there are a lot of you who love this ASMR trigger so I sat down and recorded a little something for you. :)
What is ASMR?
https://www.youtube.com/watch?v=KfjBYtIzufQ&feature=youtu.be
http://en.wikipedia.org/wiki/Autonomous_sensory_meridian_response