This was a custom request :

Hello to everyone, today i show you what happen inside my mouth while i make a lot of saliva!
In this clip you'll see with amazing anlternat view from outside and inside of my mouth while my salivary glands fill my mouth with saliva.
I Fill my mouth with it and you can see clear with my reverse endoscope view.
At the end of the clip spit it all in a glass and I offer it to you like a special drink!

(the endoscope parts no have audio)