The book of rumors.chapter four i think?

Now it happened one night in one man's life,
he was half sleeping and then he felt a cold breeze of air coming from his stomach up to his neck till his mouth was full of fresh air.
And then his tongue started moving,sort of like a snake in a quick rhythm
and he felt every pore of his tongue alive.
after that night he started putting off a thick white fluid every morning that was sticked
on to his tongue.
It is been said that these are toxins that the body ejecting.
Also for the people that experience this
A pure silver spoon (Only pure silver) can be used to clean his tongue every day.