Quote Originally Posted by TheKidThatLovesMary
i thought u get cotton mouth and red eyes because the pot makes you dehydraited?
Nope, red eye is blood vessels expanding in your eyes :stoned:

Cottonmouth is from the tightening of Saliva glands - it can be from dehydration but you can get cottonmouth 5 mins after smoking, even when fully hydrated.

You can also drink a shit load and still have cottonmouth - again because of the tightening of saliva glands - most smokers have probably experienced this.