You prevent it by beginning to always bring a drink with you when you smoke. I always make sure to have a drink with me for multiple reasons. Helps cool down the heat in your throat from smoking, feels extremely relieving having a drink if you start coughing, and helps if you get cotton mouth. It also seems to fade away a bit with time. I used to get cotton mouth very badly when I first starting smoking, but now after about 6 years I only get it rarely.
the color of your tongue generally doesnt change. but the cotton mouth associated with marijuana will give it a dried out appearance sometimes with a thick coat of white saliva.
Cotton is a highly flammable material, and cotton plants are known to catch fire easily if exposed to a flame or spark. The high cellulose content in cotton fibers makes them combustible, which is why cotton fires can spread quickly. It is important to take precautions to prevent cotton plants from coming into contact with sources of ignition.
They cannot know for sure, but it is an indicator. When smoking marijuana, the tongue sometimes becomes dry or white. In slang it is known as "having cotton mouth." There are also oral swabs that many officers carry. The swab tests for marijuana. The officer can swab the tongue and get a result right there on scene.
It depends how much is in your system. If you smoke all the time everyday, then it can take upwards of 30 days to leave your system.
Keep them clean and use cotton wool to stop water getting into them during showers etc.
Generally from 21hrs to four days.
wear cotton free socks
To help prevent infection by ensuring no germs get in the wounds from the cotton.
You get really loaded/high, you get the munchies, you get cotton mouth, you get lazy and very creative
To prevent Southern efforts to sell cotton in Europe in exchange for war supplies.
Cotton Mather
You REALLY should not swim for at least 7 days, and you should try to prevent from water getting in it at all. It also helps to put a cotton ball in it while showering. You should'nt share your headphones for a while (to prevent giving it to someone).