i've had the absolute worst cotten mouth i had be doing meth and u know how that shit dehydrates u like hell then i went to walk our dogs by this lake with my step dad and were smoking pot and the weed cotten mouth was multiplied 10x i had absolutely no liquid in my mouth we had no water and i could not produce saliva my tongue was like sand paper i really thought i was gonna choke and die on my own toungue it was scary